Download DUET (Delhi University Entrance Test conducted by the NTA) 2018 DU MSc Microbiology Question Paper With Solution Key
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DU MSc Microbiology
Topic:- DU_J18_MSC_MICRO
Sanger?s method of sequencing is: [Question ID = 51724]
1. Sequencing by chain synthesis [Option ID = 86888]
2. Sequencing by chain cleavage [Option ID = 86890]
3. Sequencing by chain termination [Option ID = 86889]
4. Sequencing by chain ligation [Option ID = 86891]
Correct Answer :-
Sequencing by chain termination [Option ID = 86889]
What is the hydrogen ion concentration in moles/L, if pH of a solution is 3.0?
[Question ID = 51740]
1. 1 x 10
-3
[Option ID = 86954]
2. 4 x 10
-3
[Option ID = 86955]
3. 3 x 10
-3
[Option ID = 86953]
4. 3 [Option ID = 86952]
Correct Answer :-
1 x 10
-3
[Option ID = 86954]
A taxonomic system which takes into consideration a large number of phenotypic and genotypic characteristics of the organism is
called: [Question ID = 51757]
1. Numerical taxonomy [Option ID = 87021]
2. Molecular taxonomy [Option ID = 87022]
3. Phylogenetics [Option ID = 87020]
4. Phylogenomics [Option ID = 87023]
Correct Answer :-
Numerical taxonomy [Option ID = 87021]
The cytokine which is most commonly used for proliferation of bone marrow cells in vitro:
[Question ID = 51768]
1. TGF-? [Option ID = 87066]
2. GM-CSF [Option ID = 87064]
3. IFN-? [Option ID = 87065]
4. IL-2 [Option ID = 87067]
Correct Answer :-
GM-CSF [Option ID = 87064]
The interaction of two proteins within a cell can be visualized by:
[Question ID = 51689]
1. All of the above [Option ID = 86751]
2. Biomolecules with fluorescence complementation [Option ID = 86749]
3. Fluorescence recovery effectively transferred [Option ID = 86748]
4. Fluorescence resonance energy transfer [Option ID = 86750]
Correct Answer :-
Fluorescence resonance energy transfer [Option ID = 86750]
The arrangement in which flagella are distributed all around the bacterial cell is known as:
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4)
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6)
DU MSc Microbiology
Topic:- DU_J18_MSC_MICRO
Sanger?s method of sequencing is: [Question ID = 51724]
1. Sequencing by chain synthesis [Option ID = 86888]
2. Sequencing by chain cleavage [Option ID = 86890]
3. Sequencing by chain termination [Option ID = 86889]
4. Sequencing by chain ligation [Option ID = 86891]
Correct Answer :-
Sequencing by chain termination [Option ID = 86889]
What is the hydrogen ion concentration in moles/L, if pH of a solution is 3.0?
[Question ID = 51740]
1. 1 x 10
-3
[Option ID = 86954]
2. 4 x 10
-3
[Option ID = 86955]
3. 3 x 10
-3
[Option ID = 86953]
4. 3 [Option ID = 86952]
Correct Answer :-
1 x 10
-3
[Option ID = 86954]
A taxonomic system which takes into consideration a large number of phenotypic and genotypic characteristics of the organism is
called: [Question ID = 51757]
1. Numerical taxonomy [Option ID = 87021]
2. Molecular taxonomy [Option ID = 87022]
3. Phylogenetics [Option ID = 87020]
4. Phylogenomics [Option ID = 87023]
Correct Answer :-
Numerical taxonomy [Option ID = 87021]
The cytokine which is most commonly used for proliferation of bone marrow cells in vitro:
[Question ID = 51768]
1. TGF-? [Option ID = 87066]
2. GM-CSF [Option ID = 87064]
3. IFN-? [Option ID = 87065]
4. IL-2 [Option ID = 87067]
Correct Answer :-
GM-CSF [Option ID = 87064]
The interaction of two proteins within a cell can be visualized by:
[Question ID = 51689]
1. All of the above [Option ID = 86751]
2. Biomolecules with fluorescence complementation [Option ID = 86749]
3. Fluorescence recovery effectively transferred [Option ID = 86748]
4. Fluorescence resonance energy transfer [Option ID = 86750]
Correct Answer :-
Fluorescence resonance energy transfer [Option ID = 86750]
The arrangement in which flagella are distributed all around the bacterial cell is known as:
7)
8)
9)
10)
11)
[Question ID = 51727]
1. Amphitrichous [Option ID = 86901]
2. Peritrichous [Option ID = 86902]
3. Monotrichous [Option ID = 86903]
4. Lophotrichous [Option ID = 86900]
Correct Answer :-
Peritrichous [Option ID = 86902]
The dried female flowers of Humulus lupulus are used in the production of:
[Question ID = 51725]
1. Wine [Option ID = 86893]
2. Bread [Option ID = 86892]
3. Beer [Option ID = 86894]
4. Tofu [Option ID = 86895]
Correct Answer :-
Beer [Option ID = 86894]
The Swiss cheese ripening process is done using:
[Question ID = 51738]
1. Geotrichium candidum [Option ID = 86947]
2. Penicillium roqueforti [Option ID = 86945]
3. Penicillium camemberti [Option ID = 86944]
4. Propionibacterium sp. [Option ID = 86946]
Correct Answer :-
Propionibacterium sp. [Option ID = 86946]
The culture media containing heat labile constituents are best sterilized by:
[Question ID = 51687]
1. UV-irradiation [Option ID = 86743]
2. Filtration using membrane filter [Option ID = 86742]
3. Dry heat at 180
o
C for 30 min [Option ID = 86740]
4. Autoclaving at 15 psi for 30 min [Option ID = 86741]
Correct Answer :-
Filtration using membrane filter [Option ID = 86742]
The koji for miso is a culture of:
[Question ID = 51736]
1. Aspergillus oryzae [Option ID = 86937]
2. Aspergillus lentulus [Option ID = 86939]
3. Aspergillus flavus [Option ID = 86936]
4. Aspergillus fumigatus [Option ID = 86938]
Correct Answer :-
Aspergillus oryzae [Option ID = 86937]
Klinefelter syndrome is characterized by: [Question ID = 51712]
1. chromosome 19 trisomy [Option ID = 86841]
2. chromosome 21 monosomy [Option ID = 86843]
3. one or more extra X chromosomes [Option ID = 86840]
4. fragile X chromosome [Option ID = 86842]
Correct Answer :-
one or more extra X chromosomes [Option ID = 86840]
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DU MSc Microbiology
Topic:- DU_J18_MSC_MICRO
Sanger?s method of sequencing is: [Question ID = 51724]
1. Sequencing by chain synthesis [Option ID = 86888]
2. Sequencing by chain cleavage [Option ID = 86890]
3. Sequencing by chain termination [Option ID = 86889]
4. Sequencing by chain ligation [Option ID = 86891]
Correct Answer :-
Sequencing by chain termination [Option ID = 86889]
What is the hydrogen ion concentration in moles/L, if pH of a solution is 3.0?
[Question ID = 51740]
1. 1 x 10
-3
[Option ID = 86954]
2. 4 x 10
-3
[Option ID = 86955]
3. 3 x 10
-3
[Option ID = 86953]
4. 3 [Option ID = 86952]
Correct Answer :-
1 x 10
-3
[Option ID = 86954]
A taxonomic system which takes into consideration a large number of phenotypic and genotypic characteristics of the organism is
called: [Question ID = 51757]
1. Numerical taxonomy [Option ID = 87021]
2. Molecular taxonomy [Option ID = 87022]
3. Phylogenetics [Option ID = 87020]
4. Phylogenomics [Option ID = 87023]
Correct Answer :-
Numerical taxonomy [Option ID = 87021]
The cytokine which is most commonly used for proliferation of bone marrow cells in vitro:
[Question ID = 51768]
1. TGF-? [Option ID = 87066]
2. GM-CSF [Option ID = 87064]
3. IFN-? [Option ID = 87065]
4. IL-2 [Option ID = 87067]
Correct Answer :-
GM-CSF [Option ID = 87064]
The interaction of two proteins within a cell can be visualized by:
[Question ID = 51689]
1. All of the above [Option ID = 86751]
2. Biomolecules with fluorescence complementation [Option ID = 86749]
3. Fluorescence recovery effectively transferred [Option ID = 86748]
4. Fluorescence resonance energy transfer [Option ID = 86750]
Correct Answer :-
Fluorescence resonance energy transfer [Option ID = 86750]
The arrangement in which flagella are distributed all around the bacterial cell is known as:
7)
8)
9)
10)
11)
[Question ID = 51727]
1. Amphitrichous [Option ID = 86901]
2. Peritrichous [Option ID = 86902]
3. Monotrichous [Option ID = 86903]
4. Lophotrichous [Option ID = 86900]
Correct Answer :-
Peritrichous [Option ID = 86902]
The dried female flowers of Humulus lupulus are used in the production of:
[Question ID = 51725]
1. Wine [Option ID = 86893]
2. Bread [Option ID = 86892]
3. Beer [Option ID = 86894]
4. Tofu [Option ID = 86895]
Correct Answer :-
Beer [Option ID = 86894]
The Swiss cheese ripening process is done using:
[Question ID = 51738]
1. Geotrichium candidum [Option ID = 86947]
2. Penicillium roqueforti [Option ID = 86945]
3. Penicillium camemberti [Option ID = 86944]
4. Propionibacterium sp. [Option ID = 86946]
Correct Answer :-
Propionibacterium sp. [Option ID = 86946]
The culture media containing heat labile constituents are best sterilized by:
[Question ID = 51687]
1. UV-irradiation [Option ID = 86743]
2. Filtration using membrane filter [Option ID = 86742]
3. Dry heat at 180
o
C for 30 min [Option ID = 86740]
4. Autoclaving at 15 psi for 30 min [Option ID = 86741]
Correct Answer :-
Filtration using membrane filter [Option ID = 86742]
The koji for miso is a culture of:
[Question ID = 51736]
1. Aspergillus oryzae [Option ID = 86937]
2. Aspergillus lentulus [Option ID = 86939]
3. Aspergillus flavus [Option ID = 86936]
4. Aspergillus fumigatus [Option ID = 86938]
Correct Answer :-
Aspergillus oryzae [Option ID = 86937]
Klinefelter syndrome is characterized by: [Question ID = 51712]
1. chromosome 19 trisomy [Option ID = 86841]
2. chromosome 21 monosomy [Option ID = 86843]
3. one or more extra X chromosomes [Option ID = 86840]
4. fragile X chromosome [Option ID = 86842]
Correct Answer :-
one or more extra X chromosomes [Option ID = 86840]
12)
13)
14)
15)
16)
17)
18)
Peptidoglycan is also known as: [Question ID = 51732]
1. N-acetyl glucosamine [Option ID = 86922]
2. N-acetyl muramic acid [Option ID = 86920]
3. Murein mucopeptide [Option ID = 86921]
4. Mesodiaminopimelic acid [Option ID = 86923]
Correct Answer :-
Murein mucopeptide [Option ID = 86921]
All of the following are sporicidal except: [Question ID = 51706]
1. Formaldehyde [Option ID = 86818]
2. Glutaraldehyde [Option ID = 86816]
3. Ethylene oxide [Option ID = 86817]
4. Alcohol [Option ID = 86819]
Correct Answer :-
Alcohol [Option ID = 86819]
The time required to kill 90% of the micro-organisms in a sample at a specific temperature is the [Question ID = 51698]
1. Decimal reduction time [Option ID = 86785]
2. Log reduction [Option ID = 86786]
3. Thermal inactivation constant [Option ID = 86787]
4. Thermal death point [Option ID = 86784]
Correct Answer :-
Decimal reduction time [Option ID = 86785]
The new antigens which appear on the tumors produced by irradiation are called: [Question ID = 51705]
1. Tumor-specific transplantation antigens (TSTA) [Option ID = 86813]
2. Carcino-embryonic antigens [Option ID = 86814]
3. Tumor associated antigens (TAA) [Option ID = 86812]
4. Tumor infiltrating antigens [Option ID = 86815]
Correct Answer :-
Tumor-specific transplantation antigens (TSTA) [Option ID = 86813]
Thermoduric bacteria are majorly found in:
[Question ID = 51729]
1. Pasteurized milk and dried milk [Option ID = 86909]
2. Ice-creams [Option ID = 86908]
3. None of the these [Option ID = 86911]
4. Vegetables [Option ID = 86910]
Correct Answer :-
Pasteurized milk and dried milk [Option ID = 86909]
The phenomenon in which the severity of symptoms in genetic disorders increases from generation to generation is called: [Question
ID = 51699]
1. Genetic drift [Option ID = 86788]
2. Genetic anticipation [Option ID = 86789]
3. Genetic polymorphism [Option ID = 86791]
4. Genetic erosion [Option ID = 86790]
Correct Answer :-
Genetic anticipation [Option ID = 86789]
Deviation in Hardy-Weinberg equilibrium in a population would be caused by [Question ID = 51720]
1. Small population size [Option ID = 86875]
2. Lack of mutation [Option ID = 86874]
3. Lack of selection [Option ID = 86873]
4. Random mating [Option ID = 86872]
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1)
2)
3)
4)
5)
6)
DU MSc Microbiology
Topic:- DU_J18_MSC_MICRO
Sanger?s method of sequencing is: [Question ID = 51724]
1. Sequencing by chain synthesis [Option ID = 86888]
2. Sequencing by chain cleavage [Option ID = 86890]
3. Sequencing by chain termination [Option ID = 86889]
4. Sequencing by chain ligation [Option ID = 86891]
Correct Answer :-
Sequencing by chain termination [Option ID = 86889]
What is the hydrogen ion concentration in moles/L, if pH of a solution is 3.0?
[Question ID = 51740]
1. 1 x 10
-3
[Option ID = 86954]
2. 4 x 10
-3
[Option ID = 86955]
3. 3 x 10
-3
[Option ID = 86953]
4. 3 [Option ID = 86952]
Correct Answer :-
1 x 10
-3
[Option ID = 86954]
A taxonomic system which takes into consideration a large number of phenotypic and genotypic characteristics of the organism is
called: [Question ID = 51757]
1. Numerical taxonomy [Option ID = 87021]
2. Molecular taxonomy [Option ID = 87022]
3. Phylogenetics [Option ID = 87020]
4. Phylogenomics [Option ID = 87023]
Correct Answer :-
Numerical taxonomy [Option ID = 87021]
The cytokine which is most commonly used for proliferation of bone marrow cells in vitro:
[Question ID = 51768]
1. TGF-? [Option ID = 87066]
2. GM-CSF [Option ID = 87064]
3. IFN-? [Option ID = 87065]
4. IL-2 [Option ID = 87067]
Correct Answer :-
GM-CSF [Option ID = 87064]
The interaction of two proteins within a cell can be visualized by:
[Question ID = 51689]
1. All of the above [Option ID = 86751]
2. Biomolecules with fluorescence complementation [Option ID = 86749]
3. Fluorescence recovery effectively transferred [Option ID = 86748]
4. Fluorescence resonance energy transfer [Option ID = 86750]
Correct Answer :-
Fluorescence resonance energy transfer [Option ID = 86750]
The arrangement in which flagella are distributed all around the bacterial cell is known as:
7)
8)
9)
10)
11)
[Question ID = 51727]
1. Amphitrichous [Option ID = 86901]
2. Peritrichous [Option ID = 86902]
3. Monotrichous [Option ID = 86903]
4. Lophotrichous [Option ID = 86900]
Correct Answer :-
Peritrichous [Option ID = 86902]
The dried female flowers of Humulus lupulus are used in the production of:
[Question ID = 51725]
1. Wine [Option ID = 86893]
2. Bread [Option ID = 86892]
3. Beer [Option ID = 86894]
4. Tofu [Option ID = 86895]
Correct Answer :-
Beer [Option ID = 86894]
The Swiss cheese ripening process is done using:
[Question ID = 51738]
1. Geotrichium candidum [Option ID = 86947]
2. Penicillium roqueforti [Option ID = 86945]
3. Penicillium camemberti [Option ID = 86944]
4. Propionibacterium sp. [Option ID = 86946]
Correct Answer :-
Propionibacterium sp. [Option ID = 86946]
The culture media containing heat labile constituents are best sterilized by:
[Question ID = 51687]
1. UV-irradiation [Option ID = 86743]
2. Filtration using membrane filter [Option ID = 86742]
3. Dry heat at 180
o
C for 30 min [Option ID = 86740]
4. Autoclaving at 15 psi for 30 min [Option ID = 86741]
Correct Answer :-
Filtration using membrane filter [Option ID = 86742]
The koji for miso is a culture of:
[Question ID = 51736]
1. Aspergillus oryzae [Option ID = 86937]
2. Aspergillus lentulus [Option ID = 86939]
3. Aspergillus flavus [Option ID = 86936]
4. Aspergillus fumigatus [Option ID = 86938]
Correct Answer :-
Aspergillus oryzae [Option ID = 86937]
Klinefelter syndrome is characterized by: [Question ID = 51712]
1. chromosome 19 trisomy [Option ID = 86841]
2. chromosome 21 monosomy [Option ID = 86843]
3. one or more extra X chromosomes [Option ID = 86840]
4. fragile X chromosome [Option ID = 86842]
Correct Answer :-
one or more extra X chromosomes [Option ID = 86840]
12)
13)
14)
15)
16)
17)
18)
Peptidoglycan is also known as: [Question ID = 51732]
1. N-acetyl glucosamine [Option ID = 86922]
2. N-acetyl muramic acid [Option ID = 86920]
3. Murein mucopeptide [Option ID = 86921]
4. Mesodiaminopimelic acid [Option ID = 86923]
Correct Answer :-
Murein mucopeptide [Option ID = 86921]
All of the following are sporicidal except: [Question ID = 51706]
1. Formaldehyde [Option ID = 86818]
2. Glutaraldehyde [Option ID = 86816]
3. Ethylene oxide [Option ID = 86817]
4. Alcohol [Option ID = 86819]
Correct Answer :-
Alcohol [Option ID = 86819]
The time required to kill 90% of the micro-organisms in a sample at a specific temperature is the [Question ID = 51698]
1. Decimal reduction time [Option ID = 86785]
2. Log reduction [Option ID = 86786]
3. Thermal inactivation constant [Option ID = 86787]
4. Thermal death point [Option ID = 86784]
Correct Answer :-
Decimal reduction time [Option ID = 86785]
The new antigens which appear on the tumors produced by irradiation are called: [Question ID = 51705]
1. Tumor-specific transplantation antigens (TSTA) [Option ID = 86813]
2. Carcino-embryonic antigens [Option ID = 86814]
3. Tumor associated antigens (TAA) [Option ID = 86812]
4. Tumor infiltrating antigens [Option ID = 86815]
Correct Answer :-
Tumor-specific transplantation antigens (TSTA) [Option ID = 86813]
Thermoduric bacteria are majorly found in:
[Question ID = 51729]
1. Pasteurized milk and dried milk [Option ID = 86909]
2. Ice-creams [Option ID = 86908]
3. None of the these [Option ID = 86911]
4. Vegetables [Option ID = 86910]
Correct Answer :-
Pasteurized milk and dried milk [Option ID = 86909]
The phenomenon in which the severity of symptoms in genetic disorders increases from generation to generation is called: [Question
ID = 51699]
1. Genetic drift [Option ID = 86788]
2. Genetic anticipation [Option ID = 86789]
3. Genetic polymorphism [Option ID = 86791]
4. Genetic erosion [Option ID = 86790]
Correct Answer :-
Genetic anticipation [Option ID = 86789]
Deviation in Hardy-Weinberg equilibrium in a population would be caused by [Question ID = 51720]
1. Small population size [Option ID = 86875]
2. Lack of mutation [Option ID = 86874]
3. Lack of selection [Option ID = 86873]
4. Random mating [Option ID = 86872]
19)
20)
21)
22)
23)
24)
25)
Correct Answer :-
Small population size [Option ID = 86875]
If the specific growth rate of the microorganism is 0.25 h-1, find out it?s doubling time? [Question ID = 51750]
1. 1.77 h [Option ID = 86992]
2. 2.77 h [Option ID = 86993]
3. 4.77 h [Option ID = 86995]
4. 3.77 h [Option ID = 86994]
Correct Answer :-
2.77 h [Option ID = 86993]
A polymerase that extends DNA chains in template-independent manner is: [Question ID = 51726]
1. Klenow [Option ID = 86897]
2. DNA pol I [Option ID = 86896]
3. Terminal deoxynucleotidyl transferase [Option ID = 86898]
4. Pfu DNA polymerase [Option ID = 86899]
Correct Answer :-
Terminal deoxynucleotidyl transferase [Option ID = 86898]
The Pathogenicity Islands (PAI) which are responsible for emergence of new pathogens are part of: [Question ID = 51696]
1. Integral part of integrons [Option ID = 86778]
2. Core genome of bacteria [Option ID = 86776]
3. Part of plasmids [Option ID = 86779]
4. Flexible genome pool of bacteria [Option ID = 86777]
Correct Answer :-
Core genome of bacteria [Option ID = 86776]
Universal primers used in Sanger?s sequencing of plasmid DNA are: [Question ID = 51769]
1. primers complementary to the vector sequences flanking the multiple cloning site [Option ID = 87071]
2. primers complementary to the antibiotic resistance gene of the vector [Option ID = 87069]
3. primers complementary to the multiple cloning sequence of the vector [Option ID = 87070]
4. primers of random sequence of length 18 nucleotides [Option ID = 87068]
Correct Answer :-
primers complementary to the vector sequences flanking the multiple cloning site [Option ID = 87071]
In 2011, which virus was declared by OIE to be eradicated from earth after successful culmination of global vaccination and
monitoring program for that virus?
[Question ID = 51700]
1. Rinderpest virus [Option ID = 86794]
2. Sheeppox virus [Option ID = 86793]
3. Smallpox virus [Option ID = 86792]
4. Peste-des-petits ruminants virus [Option ID = 86795]
Correct Answer :-
Rinderpest virus [Option ID = 86794]
In the latent state, Herpes simplex virus makes an 8.3 kilobase RNA transcript called: [Question ID = 51682]
1. LMT or latent membrane transcript [Option ID = 86722]
2. None of the above [Option ID = 86723]
3. LAT or latency associated transcript [Option ID = 86720]
4. LANA or latency associated nuclear antigen [Option ID = 86721]
Correct Answer :-
LAT or latency associated transcript [Option ID = 86720]
Variegation in four o?clock plants is an example of:
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4)
5)
6)
DU MSc Microbiology
Topic:- DU_J18_MSC_MICRO
Sanger?s method of sequencing is: [Question ID = 51724]
1. Sequencing by chain synthesis [Option ID = 86888]
2. Sequencing by chain cleavage [Option ID = 86890]
3. Sequencing by chain termination [Option ID = 86889]
4. Sequencing by chain ligation [Option ID = 86891]
Correct Answer :-
Sequencing by chain termination [Option ID = 86889]
What is the hydrogen ion concentration in moles/L, if pH of a solution is 3.0?
[Question ID = 51740]
1. 1 x 10
-3
[Option ID = 86954]
2. 4 x 10
-3
[Option ID = 86955]
3. 3 x 10
-3
[Option ID = 86953]
4. 3 [Option ID = 86952]
Correct Answer :-
1 x 10
-3
[Option ID = 86954]
A taxonomic system which takes into consideration a large number of phenotypic and genotypic characteristics of the organism is
called: [Question ID = 51757]
1. Numerical taxonomy [Option ID = 87021]
2. Molecular taxonomy [Option ID = 87022]
3. Phylogenetics [Option ID = 87020]
4. Phylogenomics [Option ID = 87023]
Correct Answer :-
Numerical taxonomy [Option ID = 87021]
The cytokine which is most commonly used for proliferation of bone marrow cells in vitro:
[Question ID = 51768]
1. TGF-? [Option ID = 87066]
2. GM-CSF [Option ID = 87064]
3. IFN-? [Option ID = 87065]
4. IL-2 [Option ID = 87067]
Correct Answer :-
GM-CSF [Option ID = 87064]
The interaction of two proteins within a cell can be visualized by:
[Question ID = 51689]
1. All of the above [Option ID = 86751]
2. Biomolecules with fluorescence complementation [Option ID = 86749]
3. Fluorescence recovery effectively transferred [Option ID = 86748]
4. Fluorescence resonance energy transfer [Option ID = 86750]
Correct Answer :-
Fluorescence resonance energy transfer [Option ID = 86750]
The arrangement in which flagella are distributed all around the bacterial cell is known as:
7)
8)
9)
10)
11)
[Question ID = 51727]
1. Amphitrichous [Option ID = 86901]
2. Peritrichous [Option ID = 86902]
3. Monotrichous [Option ID = 86903]
4. Lophotrichous [Option ID = 86900]
Correct Answer :-
Peritrichous [Option ID = 86902]
The dried female flowers of Humulus lupulus are used in the production of:
[Question ID = 51725]
1. Wine [Option ID = 86893]
2. Bread [Option ID = 86892]
3. Beer [Option ID = 86894]
4. Tofu [Option ID = 86895]
Correct Answer :-
Beer [Option ID = 86894]
The Swiss cheese ripening process is done using:
[Question ID = 51738]
1. Geotrichium candidum [Option ID = 86947]
2. Penicillium roqueforti [Option ID = 86945]
3. Penicillium camemberti [Option ID = 86944]
4. Propionibacterium sp. [Option ID = 86946]
Correct Answer :-
Propionibacterium sp. [Option ID = 86946]
The culture media containing heat labile constituents are best sterilized by:
[Question ID = 51687]
1. UV-irradiation [Option ID = 86743]
2. Filtration using membrane filter [Option ID = 86742]
3. Dry heat at 180
o
C for 30 min [Option ID = 86740]
4. Autoclaving at 15 psi for 30 min [Option ID = 86741]
Correct Answer :-
Filtration using membrane filter [Option ID = 86742]
The koji for miso is a culture of:
[Question ID = 51736]
1. Aspergillus oryzae [Option ID = 86937]
2. Aspergillus lentulus [Option ID = 86939]
3. Aspergillus flavus [Option ID = 86936]
4. Aspergillus fumigatus [Option ID = 86938]
Correct Answer :-
Aspergillus oryzae [Option ID = 86937]
Klinefelter syndrome is characterized by: [Question ID = 51712]
1. chromosome 19 trisomy [Option ID = 86841]
2. chromosome 21 monosomy [Option ID = 86843]
3. one or more extra X chromosomes [Option ID = 86840]
4. fragile X chromosome [Option ID = 86842]
Correct Answer :-
one or more extra X chromosomes [Option ID = 86840]
12)
13)
14)
15)
16)
17)
18)
Peptidoglycan is also known as: [Question ID = 51732]
1. N-acetyl glucosamine [Option ID = 86922]
2. N-acetyl muramic acid [Option ID = 86920]
3. Murein mucopeptide [Option ID = 86921]
4. Mesodiaminopimelic acid [Option ID = 86923]
Correct Answer :-
Murein mucopeptide [Option ID = 86921]
All of the following are sporicidal except: [Question ID = 51706]
1. Formaldehyde [Option ID = 86818]
2. Glutaraldehyde [Option ID = 86816]
3. Ethylene oxide [Option ID = 86817]
4. Alcohol [Option ID = 86819]
Correct Answer :-
Alcohol [Option ID = 86819]
The time required to kill 90% of the micro-organisms in a sample at a specific temperature is the [Question ID = 51698]
1. Decimal reduction time [Option ID = 86785]
2. Log reduction [Option ID = 86786]
3. Thermal inactivation constant [Option ID = 86787]
4. Thermal death point [Option ID = 86784]
Correct Answer :-
Decimal reduction time [Option ID = 86785]
The new antigens which appear on the tumors produced by irradiation are called: [Question ID = 51705]
1. Tumor-specific transplantation antigens (TSTA) [Option ID = 86813]
2. Carcino-embryonic antigens [Option ID = 86814]
3. Tumor associated antigens (TAA) [Option ID = 86812]
4. Tumor infiltrating antigens [Option ID = 86815]
Correct Answer :-
Tumor-specific transplantation antigens (TSTA) [Option ID = 86813]
Thermoduric bacteria are majorly found in:
[Question ID = 51729]
1. Pasteurized milk and dried milk [Option ID = 86909]
2. Ice-creams [Option ID = 86908]
3. None of the these [Option ID = 86911]
4. Vegetables [Option ID = 86910]
Correct Answer :-
Pasteurized milk and dried milk [Option ID = 86909]
The phenomenon in which the severity of symptoms in genetic disorders increases from generation to generation is called: [Question
ID = 51699]
1. Genetic drift [Option ID = 86788]
2. Genetic anticipation [Option ID = 86789]
3. Genetic polymorphism [Option ID = 86791]
4. Genetic erosion [Option ID = 86790]
Correct Answer :-
Genetic anticipation [Option ID = 86789]
Deviation in Hardy-Weinberg equilibrium in a population would be caused by [Question ID = 51720]
1. Small population size [Option ID = 86875]
2. Lack of mutation [Option ID = 86874]
3. Lack of selection [Option ID = 86873]
4. Random mating [Option ID = 86872]
19)
20)
21)
22)
23)
24)
25)
Correct Answer :-
Small population size [Option ID = 86875]
If the specific growth rate of the microorganism is 0.25 h-1, find out it?s doubling time? [Question ID = 51750]
1. 1.77 h [Option ID = 86992]
2. 2.77 h [Option ID = 86993]
3. 4.77 h [Option ID = 86995]
4. 3.77 h [Option ID = 86994]
Correct Answer :-
2.77 h [Option ID = 86993]
A polymerase that extends DNA chains in template-independent manner is: [Question ID = 51726]
1. Klenow [Option ID = 86897]
2. DNA pol I [Option ID = 86896]
3. Terminal deoxynucleotidyl transferase [Option ID = 86898]
4. Pfu DNA polymerase [Option ID = 86899]
Correct Answer :-
Terminal deoxynucleotidyl transferase [Option ID = 86898]
The Pathogenicity Islands (PAI) which are responsible for emergence of new pathogens are part of: [Question ID = 51696]
1. Integral part of integrons [Option ID = 86778]
2. Core genome of bacteria [Option ID = 86776]
3. Part of plasmids [Option ID = 86779]
4. Flexible genome pool of bacteria [Option ID = 86777]
Correct Answer :-
Core genome of bacteria [Option ID = 86776]
Universal primers used in Sanger?s sequencing of plasmid DNA are: [Question ID = 51769]
1. primers complementary to the vector sequences flanking the multiple cloning site [Option ID = 87071]
2. primers complementary to the antibiotic resistance gene of the vector [Option ID = 87069]
3. primers complementary to the multiple cloning sequence of the vector [Option ID = 87070]
4. primers of random sequence of length 18 nucleotides [Option ID = 87068]
Correct Answer :-
primers complementary to the vector sequences flanking the multiple cloning site [Option ID = 87071]
In 2011, which virus was declared by OIE to be eradicated from earth after successful culmination of global vaccination and
monitoring program for that virus?
[Question ID = 51700]
1. Rinderpest virus [Option ID = 86794]
2. Sheeppox virus [Option ID = 86793]
3. Smallpox virus [Option ID = 86792]
4. Peste-des-petits ruminants virus [Option ID = 86795]
Correct Answer :-
Rinderpest virus [Option ID = 86794]
In the latent state, Herpes simplex virus makes an 8.3 kilobase RNA transcript called: [Question ID = 51682]
1. LMT or latent membrane transcript [Option ID = 86722]
2. None of the above [Option ID = 86723]
3. LAT or latency associated transcript [Option ID = 86720]
4. LANA or latency associated nuclear antigen [Option ID = 86721]
Correct Answer :-
LAT or latency associated transcript [Option ID = 86720]
Variegation in four o?clock plants is an example of:
26)
27)
28)
29)
30)
31)
[Question ID = 51743]
1. Maternal effect [Option ID = 86964]
2. Nuclear inheritance [Option ID = 86966]
3. Organelle heredity [Option ID = 86965]
4. None of the these [Option ID = 86967]
Correct Answer :-
Organelle heredity [Option ID = 86965]
Tetracycline blocks protein synthesis by: [Question ID = 51762]
1. Inhibiting translocase enzyme [Option ID = 87043]
2. Inhibiting peptidyl transferase [Option ID = 87042]
3. Inhibiting binding of aminoacyl tRNA to ribosomes [Option ID = 87040]
4. Inhibiting initiation of translation [Option ID = 87041]
Correct Answer :-
Inhibiting binding of aminoacyl tRNA to ribosomes [Option ID = 87040]
Winogradsky column is often used for the isolation of:
[Question ID = 51734]
1. Escherichia spp. [Option ID = 86930]
2. Pyrolobus spp. [Option ID = 86931]
3. Desulfovibrio spp. [Option ID = 86928]
4. Sulfolobus spp. [Option ID = 86929]
Correct Answer :-
Desulfovibrio spp. [Option ID = 86928]
What are the end products of Entner-Doudoroff pathway? [Question ID = 51713]
1. Pyruvate [Option ID = 86846]
2. Acetaldehyde, pyruvate and CO2 [Option ID = 86847]
3. Acetaldehyde and pyruvate [Option ID = 86845]
4. Ethanol and pyruvate [Option ID = 86844]
Correct Answer :-
Ethanol and pyruvate [Option ID = 86844]
Flagella move the cell by: [Question ID = 51723]
1. An individual flagellum beating in a whip-like motion [Option ID = 86886]
2. Attaching to nearby particles and contracting [Option ID = 86885]
3. Spinning like a propeller [Option ID = 86884]
4. Many flagella beating in a synchronous whip-like motion [Option ID = 86887]
Correct Answer :-
Spinning like a propeller [Option ID = 86884]
Use of microbes for the break down or removal of toxic wastes in water and soil is called as: [Question ID = 51765]
1. Putrefaction [Option ID = 87053]
2. Recycling [Option ID = 87055]
3. Bioremediation [Option ID = 87054]
4. Decomposition [Option ID = 87052]
Correct Answer :-
Bioremediation [Option ID = 87054]
Leucine rich repeats (LRR) are an integral part of which immunological receptor? [Question ID = 51679]
1. Dendritic cell receptor [Option ID = 86710]
2. Toll-like receptor (TLR) [Option ID = 86708]
3. T cell receptor (TCR) [Option ID = 86711]
4. NK cell receptor [Option ID = 86709]
Correct Answer :-
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1)
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4)
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6)
DU MSc Microbiology
Topic:- DU_J18_MSC_MICRO
Sanger?s method of sequencing is: [Question ID = 51724]
1. Sequencing by chain synthesis [Option ID = 86888]
2. Sequencing by chain cleavage [Option ID = 86890]
3. Sequencing by chain termination [Option ID = 86889]
4. Sequencing by chain ligation [Option ID = 86891]
Correct Answer :-
Sequencing by chain termination [Option ID = 86889]
What is the hydrogen ion concentration in moles/L, if pH of a solution is 3.0?
[Question ID = 51740]
1. 1 x 10
-3
[Option ID = 86954]
2. 4 x 10
-3
[Option ID = 86955]
3. 3 x 10
-3
[Option ID = 86953]
4. 3 [Option ID = 86952]
Correct Answer :-
1 x 10
-3
[Option ID = 86954]
A taxonomic system which takes into consideration a large number of phenotypic and genotypic characteristics of the organism is
called: [Question ID = 51757]
1. Numerical taxonomy [Option ID = 87021]
2. Molecular taxonomy [Option ID = 87022]
3. Phylogenetics [Option ID = 87020]
4. Phylogenomics [Option ID = 87023]
Correct Answer :-
Numerical taxonomy [Option ID = 87021]
The cytokine which is most commonly used for proliferation of bone marrow cells in vitro:
[Question ID = 51768]
1. TGF-? [Option ID = 87066]
2. GM-CSF [Option ID = 87064]
3. IFN-? [Option ID = 87065]
4. IL-2 [Option ID = 87067]
Correct Answer :-
GM-CSF [Option ID = 87064]
The interaction of two proteins within a cell can be visualized by:
[Question ID = 51689]
1. All of the above [Option ID = 86751]
2. Biomolecules with fluorescence complementation [Option ID = 86749]
3. Fluorescence recovery effectively transferred [Option ID = 86748]
4. Fluorescence resonance energy transfer [Option ID = 86750]
Correct Answer :-
Fluorescence resonance energy transfer [Option ID = 86750]
The arrangement in which flagella are distributed all around the bacterial cell is known as:
7)
8)
9)
10)
11)
[Question ID = 51727]
1. Amphitrichous [Option ID = 86901]
2. Peritrichous [Option ID = 86902]
3. Monotrichous [Option ID = 86903]
4. Lophotrichous [Option ID = 86900]
Correct Answer :-
Peritrichous [Option ID = 86902]
The dried female flowers of Humulus lupulus are used in the production of:
[Question ID = 51725]
1. Wine [Option ID = 86893]
2. Bread [Option ID = 86892]
3. Beer [Option ID = 86894]
4. Tofu [Option ID = 86895]
Correct Answer :-
Beer [Option ID = 86894]
The Swiss cheese ripening process is done using:
[Question ID = 51738]
1. Geotrichium candidum [Option ID = 86947]
2. Penicillium roqueforti [Option ID = 86945]
3. Penicillium camemberti [Option ID = 86944]
4. Propionibacterium sp. [Option ID = 86946]
Correct Answer :-
Propionibacterium sp. [Option ID = 86946]
The culture media containing heat labile constituents are best sterilized by:
[Question ID = 51687]
1. UV-irradiation [Option ID = 86743]
2. Filtration using membrane filter [Option ID = 86742]
3. Dry heat at 180
o
C for 30 min [Option ID = 86740]
4. Autoclaving at 15 psi for 30 min [Option ID = 86741]
Correct Answer :-
Filtration using membrane filter [Option ID = 86742]
The koji for miso is a culture of:
[Question ID = 51736]
1. Aspergillus oryzae [Option ID = 86937]
2. Aspergillus lentulus [Option ID = 86939]
3. Aspergillus flavus [Option ID = 86936]
4. Aspergillus fumigatus [Option ID = 86938]
Correct Answer :-
Aspergillus oryzae [Option ID = 86937]
Klinefelter syndrome is characterized by: [Question ID = 51712]
1. chromosome 19 trisomy [Option ID = 86841]
2. chromosome 21 monosomy [Option ID = 86843]
3. one or more extra X chromosomes [Option ID = 86840]
4. fragile X chromosome [Option ID = 86842]
Correct Answer :-
one or more extra X chromosomes [Option ID = 86840]
12)
13)
14)
15)
16)
17)
18)
Peptidoglycan is also known as: [Question ID = 51732]
1. N-acetyl glucosamine [Option ID = 86922]
2. N-acetyl muramic acid [Option ID = 86920]
3. Murein mucopeptide [Option ID = 86921]
4. Mesodiaminopimelic acid [Option ID = 86923]
Correct Answer :-
Murein mucopeptide [Option ID = 86921]
All of the following are sporicidal except: [Question ID = 51706]
1. Formaldehyde [Option ID = 86818]
2. Glutaraldehyde [Option ID = 86816]
3. Ethylene oxide [Option ID = 86817]
4. Alcohol [Option ID = 86819]
Correct Answer :-
Alcohol [Option ID = 86819]
The time required to kill 90% of the micro-organisms in a sample at a specific temperature is the [Question ID = 51698]
1. Decimal reduction time [Option ID = 86785]
2. Log reduction [Option ID = 86786]
3. Thermal inactivation constant [Option ID = 86787]
4. Thermal death point [Option ID = 86784]
Correct Answer :-
Decimal reduction time [Option ID = 86785]
The new antigens which appear on the tumors produced by irradiation are called: [Question ID = 51705]
1. Tumor-specific transplantation antigens (TSTA) [Option ID = 86813]
2. Carcino-embryonic antigens [Option ID = 86814]
3. Tumor associated antigens (TAA) [Option ID = 86812]
4. Tumor infiltrating antigens [Option ID = 86815]
Correct Answer :-
Tumor-specific transplantation antigens (TSTA) [Option ID = 86813]
Thermoduric bacteria are majorly found in:
[Question ID = 51729]
1. Pasteurized milk and dried milk [Option ID = 86909]
2. Ice-creams [Option ID = 86908]
3. None of the these [Option ID = 86911]
4. Vegetables [Option ID = 86910]
Correct Answer :-
Pasteurized milk and dried milk [Option ID = 86909]
The phenomenon in which the severity of symptoms in genetic disorders increases from generation to generation is called: [Question
ID = 51699]
1. Genetic drift [Option ID = 86788]
2. Genetic anticipation [Option ID = 86789]
3. Genetic polymorphism [Option ID = 86791]
4. Genetic erosion [Option ID = 86790]
Correct Answer :-
Genetic anticipation [Option ID = 86789]
Deviation in Hardy-Weinberg equilibrium in a population would be caused by [Question ID = 51720]
1. Small population size [Option ID = 86875]
2. Lack of mutation [Option ID = 86874]
3. Lack of selection [Option ID = 86873]
4. Random mating [Option ID = 86872]
19)
20)
21)
22)
23)
24)
25)
Correct Answer :-
Small population size [Option ID = 86875]
If the specific growth rate of the microorganism is 0.25 h-1, find out it?s doubling time? [Question ID = 51750]
1. 1.77 h [Option ID = 86992]
2. 2.77 h [Option ID = 86993]
3. 4.77 h [Option ID = 86995]
4. 3.77 h [Option ID = 86994]
Correct Answer :-
2.77 h [Option ID = 86993]
A polymerase that extends DNA chains in template-independent manner is: [Question ID = 51726]
1. Klenow [Option ID = 86897]
2. DNA pol I [Option ID = 86896]
3. Terminal deoxynucleotidyl transferase [Option ID = 86898]
4. Pfu DNA polymerase [Option ID = 86899]
Correct Answer :-
Terminal deoxynucleotidyl transferase [Option ID = 86898]
The Pathogenicity Islands (PAI) which are responsible for emergence of new pathogens are part of: [Question ID = 51696]
1. Integral part of integrons [Option ID = 86778]
2. Core genome of bacteria [Option ID = 86776]
3. Part of plasmids [Option ID = 86779]
4. Flexible genome pool of bacteria [Option ID = 86777]
Correct Answer :-
Core genome of bacteria [Option ID = 86776]
Universal primers used in Sanger?s sequencing of plasmid DNA are: [Question ID = 51769]
1. primers complementary to the vector sequences flanking the multiple cloning site [Option ID = 87071]
2. primers complementary to the antibiotic resistance gene of the vector [Option ID = 87069]
3. primers complementary to the multiple cloning sequence of the vector [Option ID = 87070]
4. primers of random sequence of length 18 nucleotides [Option ID = 87068]
Correct Answer :-
primers complementary to the vector sequences flanking the multiple cloning site [Option ID = 87071]
In 2011, which virus was declared by OIE to be eradicated from earth after successful culmination of global vaccination and
monitoring program for that virus?
[Question ID = 51700]
1. Rinderpest virus [Option ID = 86794]
2. Sheeppox virus [Option ID = 86793]
3. Smallpox virus [Option ID = 86792]
4. Peste-des-petits ruminants virus [Option ID = 86795]
Correct Answer :-
Rinderpest virus [Option ID = 86794]
In the latent state, Herpes simplex virus makes an 8.3 kilobase RNA transcript called: [Question ID = 51682]
1. LMT or latent membrane transcript [Option ID = 86722]
2. None of the above [Option ID = 86723]
3. LAT or latency associated transcript [Option ID = 86720]
4. LANA or latency associated nuclear antigen [Option ID = 86721]
Correct Answer :-
LAT or latency associated transcript [Option ID = 86720]
Variegation in four o?clock plants is an example of:
26)
27)
28)
29)
30)
31)
[Question ID = 51743]
1. Maternal effect [Option ID = 86964]
2. Nuclear inheritance [Option ID = 86966]
3. Organelle heredity [Option ID = 86965]
4. None of the these [Option ID = 86967]
Correct Answer :-
Organelle heredity [Option ID = 86965]
Tetracycline blocks protein synthesis by: [Question ID = 51762]
1. Inhibiting translocase enzyme [Option ID = 87043]
2. Inhibiting peptidyl transferase [Option ID = 87042]
3. Inhibiting binding of aminoacyl tRNA to ribosomes [Option ID = 87040]
4. Inhibiting initiation of translation [Option ID = 87041]
Correct Answer :-
Inhibiting binding of aminoacyl tRNA to ribosomes [Option ID = 87040]
Winogradsky column is often used for the isolation of:
[Question ID = 51734]
1. Escherichia spp. [Option ID = 86930]
2. Pyrolobus spp. [Option ID = 86931]
3. Desulfovibrio spp. [Option ID = 86928]
4. Sulfolobus spp. [Option ID = 86929]
Correct Answer :-
Desulfovibrio spp. [Option ID = 86928]
What are the end products of Entner-Doudoroff pathway? [Question ID = 51713]
1. Pyruvate [Option ID = 86846]
2. Acetaldehyde, pyruvate and CO2 [Option ID = 86847]
3. Acetaldehyde and pyruvate [Option ID = 86845]
4. Ethanol and pyruvate [Option ID = 86844]
Correct Answer :-
Ethanol and pyruvate [Option ID = 86844]
Flagella move the cell by: [Question ID = 51723]
1. An individual flagellum beating in a whip-like motion [Option ID = 86886]
2. Attaching to nearby particles and contracting [Option ID = 86885]
3. Spinning like a propeller [Option ID = 86884]
4. Many flagella beating in a synchronous whip-like motion [Option ID = 86887]
Correct Answer :-
Spinning like a propeller [Option ID = 86884]
Use of microbes for the break down or removal of toxic wastes in water and soil is called as: [Question ID = 51765]
1. Putrefaction [Option ID = 87053]
2. Recycling [Option ID = 87055]
3. Bioremediation [Option ID = 87054]
4. Decomposition [Option ID = 87052]
Correct Answer :-
Bioremediation [Option ID = 87054]
Leucine rich repeats (LRR) are an integral part of which immunological receptor? [Question ID = 51679]
1. Dendritic cell receptor [Option ID = 86710]
2. Toll-like receptor (TLR) [Option ID = 86708]
3. T cell receptor (TCR) [Option ID = 86711]
4. NK cell receptor [Option ID = 86709]
Correct Answer :-
32)
33)
34)
35)
36)
37)
38)
Toll-like receptor (TLR) [Option ID = 86708]
Chondroid of some bacteria are better known as:
[Question ID = 51755]
1. Bacterial plasmids [Option ID = 87014]
2. Bacterial plastids [Option ID = 87013]
3. Bacterial mitochondria [Option ID = 87015]
4. Mesosomes [Option ID = 87012]
Correct Answer :-
Mesosomes [Option ID = 87012]
A condition in which a single mutation causes multiple phenotypic effects is: [Question ID = 51675]
1. Multiphenotypy [Option ID = 86695]
2. Pleiotropy [Option ID = 86692]
3. Epigenesis [Option ID = 86694]
4. Epistasis [Option ID = 86693]
Correct Answer :-
Pleiotropy [Option ID = 86692]
The blood samples of athletes can be tested for the presence of certain performance enhancing drugs using: [Question ID = 51686]
1. Real time PCRs [Option ID = 86738]
2. Microarrays [Option ID = 86737]
3. Mass spectrometry [Option ID = 86736]
4. Fluorescence spectroscopy [Option ID = 86739]
Correct Answer :-
Mass spectrometry [Option ID = 86736]
Cork screw shaped forms of bacteria are [Question ID = 51721]
1. Stalked bacteria [Option ID = 86877]
2. Bacilli [Option ID = 86876]
3. Spirochaetes [Option ID = 86878]
4. Actinomycetes [Option ID = 86879]
Correct Answer :-
Spirochaetes [Option ID = 86878]
How many molecules of carbon dioxide are released after five rounds of Krebs cycle? [Question ID = 51719]
1. 18 [Option ID = 86871]
2. 12 [Option ID = 86870]
3. 10 [Option ID = 86869]
4. 6 [Option ID = 86868]
Correct Answer :-
10 [Option ID = 86869]
The atomizer is used in the following process: [Question ID = 51756]
1. Liquid-liquid extraction [Option ID = 87017]
2. None of the these [Option ID = 87019]
3. Cross flow filtration [Option ID = 87018]
4. Spray drying [Option ID = 87016]
Correct Answer :-
Spray drying [Option ID = 87016]
The process of nonreciprocal recombination by which one allele in a heterozygote is converted into the corresponding allele is called:
[Question ID = 51707]
1. Gene targeting [Option ID = 86820]
2. Gene knockout [Option ID = 86821]
FirstRanker.com - FirstRanker's Choice
1)
2)
3)
4)
5)
6)
DU MSc Microbiology
Topic:- DU_J18_MSC_MICRO
Sanger?s method of sequencing is: [Question ID = 51724]
1. Sequencing by chain synthesis [Option ID = 86888]
2. Sequencing by chain cleavage [Option ID = 86890]
3. Sequencing by chain termination [Option ID = 86889]
4. Sequencing by chain ligation [Option ID = 86891]
Correct Answer :-
Sequencing by chain termination [Option ID = 86889]
What is the hydrogen ion concentration in moles/L, if pH of a solution is 3.0?
[Question ID = 51740]
1. 1 x 10
-3
[Option ID = 86954]
2. 4 x 10
-3
[Option ID = 86955]
3. 3 x 10
-3
[Option ID = 86953]
4. 3 [Option ID = 86952]
Correct Answer :-
1 x 10
-3
[Option ID = 86954]
A taxonomic system which takes into consideration a large number of phenotypic and genotypic characteristics of the organism is
called: [Question ID = 51757]
1. Numerical taxonomy [Option ID = 87021]
2. Molecular taxonomy [Option ID = 87022]
3. Phylogenetics [Option ID = 87020]
4. Phylogenomics [Option ID = 87023]
Correct Answer :-
Numerical taxonomy [Option ID = 87021]
The cytokine which is most commonly used for proliferation of bone marrow cells in vitro:
[Question ID = 51768]
1. TGF-? [Option ID = 87066]
2. GM-CSF [Option ID = 87064]
3. IFN-? [Option ID = 87065]
4. IL-2 [Option ID = 87067]
Correct Answer :-
GM-CSF [Option ID = 87064]
The interaction of two proteins within a cell can be visualized by:
[Question ID = 51689]
1. All of the above [Option ID = 86751]
2. Biomolecules with fluorescence complementation [Option ID = 86749]
3. Fluorescence recovery effectively transferred [Option ID = 86748]
4. Fluorescence resonance energy transfer [Option ID = 86750]
Correct Answer :-
Fluorescence resonance energy transfer [Option ID = 86750]
The arrangement in which flagella are distributed all around the bacterial cell is known as:
7)
8)
9)
10)
11)
[Question ID = 51727]
1. Amphitrichous [Option ID = 86901]
2. Peritrichous [Option ID = 86902]
3. Monotrichous [Option ID = 86903]
4. Lophotrichous [Option ID = 86900]
Correct Answer :-
Peritrichous [Option ID = 86902]
The dried female flowers of Humulus lupulus are used in the production of:
[Question ID = 51725]
1. Wine [Option ID = 86893]
2. Bread [Option ID = 86892]
3. Beer [Option ID = 86894]
4. Tofu [Option ID = 86895]
Correct Answer :-
Beer [Option ID = 86894]
The Swiss cheese ripening process is done using:
[Question ID = 51738]
1. Geotrichium candidum [Option ID = 86947]
2. Penicillium roqueforti [Option ID = 86945]
3. Penicillium camemberti [Option ID = 86944]
4. Propionibacterium sp. [Option ID = 86946]
Correct Answer :-
Propionibacterium sp. [Option ID = 86946]
The culture media containing heat labile constituents are best sterilized by:
[Question ID = 51687]
1. UV-irradiation [Option ID = 86743]
2. Filtration using membrane filter [Option ID = 86742]
3. Dry heat at 180
o
C for 30 min [Option ID = 86740]
4. Autoclaving at 15 psi for 30 min [Option ID = 86741]
Correct Answer :-
Filtration using membrane filter [Option ID = 86742]
The koji for miso is a culture of:
[Question ID = 51736]
1. Aspergillus oryzae [Option ID = 86937]
2. Aspergillus lentulus [Option ID = 86939]
3. Aspergillus flavus [Option ID = 86936]
4. Aspergillus fumigatus [Option ID = 86938]
Correct Answer :-
Aspergillus oryzae [Option ID = 86937]
Klinefelter syndrome is characterized by: [Question ID = 51712]
1. chromosome 19 trisomy [Option ID = 86841]
2. chromosome 21 monosomy [Option ID = 86843]
3. one or more extra X chromosomes [Option ID = 86840]
4. fragile X chromosome [Option ID = 86842]
Correct Answer :-
one or more extra X chromosomes [Option ID = 86840]
12)
13)
14)
15)
16)
17)
18)
Peptidoglycan is also known as: [Question ID = 51732]
1. N-acetyl glucosamine [Option ID = 86922]
2. N-acetyl muramic acid [Option ID = 86920]
3. Murein mucopeptide [Option ID = 86921]
4. Mesodiaminopimelic acid [Option ID = 86923]
Correct Answer :-
Murein mucopeptide [Option ID = 86921]
All of the following are sporicidal except: [Question ID = 51706]
1. Formaldehyde [Option ID = 86818]
2. Glutaraldehyde [Option ID = 86816]
3. Ethylene oxide [Option ID = 86817]
4. Alcohol [Option ID = 86819]
Correct Answer :-
Alcohol [Option ID = 86819]
The time required to kill 90% of the micro-organisms in a sample at a specific temperature is the [Question ID = 51698]
1. Decimal reduction time [Option ID = 86785]
2. Log reduction [Option ID = 86786]
3. Thermal inactivation constant [Option ID = 86787]
4. Thermal death point [Option ID = 86784]
Correct Answer :-
Decimal reduction time [Option ID = 86785]
The new antigens which appear on the tumors produced by irradiation are called: [Question ID = 51705]
1. Tumor-specific transplantation antigens (TSTA) [Option ID = 86813]
2. Carcino-embryonic antigens [Option ID = 86814]
3. Tumor associated antigens (TAA) [Option ID = 86812]
4. Tumor infiltrating antigens [Option ID = 86815]
Correct Answer :-
Tumor-specific transplantation antigens (TSTA) [Option ID = 86813]
Thermoduric bacteria are majorly found in:
[Question ID = 51729]
1. Pasteurized milk and dried milk [Option ID = 86909]
2. Ice-creams [Option ID = 86908]
3. None of the these [Option ID = 86911]
4. Vegetables [Option ID = 86910]
Correct Answer :-
Pasteurized milk and dried milk [Option ID = 86909]
The phenomenon in which the severity of symptoms in genetic disorders increases from generation to generation is called: [Question
ID = 51699]
1. Genetic drift [Option ID = 86788]
2. Genetic anticipation [Option ID = 86789]
3. Genetic polymorphism [Option ID = 86791]
4. Genetic erosion [Option ID = 86790]
Correct Answer :-
Genetic anticipation [Option ID = 86789]
Deviation in Hardy-Weinberg equilibrium in a population would be caused by [Question ID = 51720]
1. Small population size [Option ID = 86875]
2. Lack of mutation [Option ID = 86874]
3. Lack of selection [Option ID = 86873]
4. Random mating [Option ID = 86872]
19)
20)
21)
22)
23)
24)
25)
Correct Answer :-
Small population size [Option ID = 86875]
If the specific growth rate of the microorganism is 0.25 h-1, find out it?s doubling time? [Question ID = 51750]
1. 1.77 h [Option ID = 86992]
2. 2.77 h [Option ID = 86993]
3. 4.77 h [Option ID = 86995]
4. 3.77 h [Option ID = 86994]
Correct Answer :-
2.77 h [Option ID = 86993]
A polymerase that extends DNA chains in template-independent manner is: [Question ID = 51726]
1. Klenow [Option ID = 86897]
2. DNA pol I [Option ID = 86896]
3. Terminal deoxynucleotidyl transferase [Option ID = 86898]
4. Pfu DNA polymerase [Option ID = 86899]
Correct Answer :-
Terminal deoxynucleotidyl transferase [Option ID = 86898]
The Pathogenicity Islands (PAI) which are responsible for emergence of new pathogens are part of: [Question ID = 51696]
1. Integral part of integrons [Option ID = 86778]
2. Core genome of bacteria [Option ID = 86776]
3. Part of plasmids [Option ID = 86779]
4. Flexible genome pool of bacteria [Option ID = 86777]
Correct Answer :-
Core genome of bacteria [Option ID = 86776]
Universal primers used in Sanger?s sequencing of plasmid DNA are: [Question ID = 51769]
1. primers complementary to the vector sequences flanking the multiple cloning site [Option ID = 87071]
2. primers complementary to the antibiotic resistance gene of the vector [Option ID = 87069]
3. primers complementary to the multiple cloning sequence of the vector [Option ID = 87070]
4. primers of random sequence of length 18 nucleotides [Option ID = 87068]
Correct Answer :-
primers complementary to the vector sequences flanking the multiple cloning site [Option ID = 87071]
In 2011, which virus was declared by OIE to be eradicated from earth after successful culmination of global vaccination and
monitoring program for that virus?
[Question ID = 51700]
1. Rinderpest virus [Option ID = 86794]
2. Sheeppox virus [Option ID = 86793]
3. Smallpox virus [Option ID = 86792]
4. Peste-des-petits ruminants virus [Option ID = 86795]
Correct Answer :-
Rinderpest virus [Option ID = 86794]
In the latent state, Herpes simplex virus makes an 8.3 kilobase RNA transcript called: [Question ID = 51682]
1. LMT or latent membrane transcript [Option ID = 86722]
2. None of the above [Option ID = 86723]
3. LAT or latency associated transcript [Option ID = 86720]
4. LANA or latency associated nuclear antigen [Option ID = 86721]
Correct Answer :-
LAT or latency associated transcript [Option ID = 86720]
Variegation in four o?clock plants is an example of:
26)
27)
28)
29)
30)
31)
[Question ID = 51743]
1. Maternal effect [Option ID = 86964]
2. Nuclear inheritance [Option ID = 86966]
3. Organelle heredity [Option ID = 86965]
4. None of the these [Option ID = 86967]
Correct Answer :-
Organelle heredity [Option ID = 86965]
Tetracycline blocks protein synthesis by: [Question ID = 51762]
1. Inhibiting translocase enzyme [Option ID = 87043]
2. Inhibiting peptidyl transferase [Option ID = 87042]
3. Inhibiting binding of aminoacyl tRNA to ribosomes [Option ID = 87040]
4. Inhibiting initiation of translation [Option ID = 87041]
Correct Answer :-
Inhibiting binding of aminoacyl tRNA to ribosomes [Option ID = 87040]
Winogradsky column is often used for the isolation of:
[Question ID = 51734]
1. Escherichia spp. [Option ID = 86930]
2. Pyrolobus spp. [Option ID = 86931]
3. Desulfovibrio spp. [Option ID = 86928]
4. Sulfolobus spp. [Option ID = 86929]
Correct Answer :-
Desulfovibrio spp. [Option ID = 86928]
What are the end products of Entner-Doudoroff pathway? [Question ID = 51713]
1. Pyruvate [Option ID = 86846]
2. Acetaldehyde, pyruvate and CO2 [Option ID = 86847]
3. Acetaldehyde and pyruvate [Option ID = 86845]
4. Ethanol and pyruvate [Option ID = 86844]
Correct Answer :-
Ethanol and pyruvate [Option ID = 86844]
Flagella move the cell by: [Question ID = 51723]
1. An individual flagellum beating in a whip-like motion [Option ID = 86886]
2. Attaching to nearby particles and contracting [Option ID = 86885]
3. Spinning like a propeller [Option ID = 86884]
4. Many flagella beating in a synchronous whip-like motion [Option ID = 86887]
Correct Answer :-
Spinning like a propeller [Option ID = 86884]
Use of microbes for the break down or removal of toxic wastes in water and soil is called as: [Question ID = 51765]
1. Putrefaction [Option ID = 87053]
2. Recycling [Option ID = 87055]
3. Bioremediation [Option ID = 87054]
4. Decomposition [Option ID = 87052]
Correct Answer :-
Bioremediation [Option ID = 87054]
Leucine rich repeats (LRR) are an integral part of which immunological receptor? [Question ID = 51679]
1. Dendritic cell receptor [Option ID = 86710]
2. Toll-like receptor (TLR) [Option ID = 86708]
3. T cell receptor (TCR) [Option ID = 86711]
4. NK cell receptor [Option ID = 86709]
Correct Answer :-
32)
33)
34)
35)
36)
37)
38)
Toll-like receptor (TLR) [Option ID = 86708]
Chondroid of some bacteria are better known as:
[Question ID = 51755]
1. Bacterial plasmids [Option ID = 87014]
2. Bacterial plastids [Option ID = 87013]
3. Bacterial mitochondria [Option ID = 87015]
4. Mesosomes [Option ID = 87012]
Correct Answer :-
Mesosomes [Option ID = 87012]
A condition in which a single mutation causes multiple phenotypic effects is: [Question ID = 51675]
1. Multiphenotypy [Option ID = 86695]
2. Pleiotropy [Option ID = 86692]
3. Epigenesis [Option ID = 86694]
4. Epistasis [Option ID = 86693]
Correct Answer :-
Pleiotropy [Option ID = 86692]
The blood samples of athletes can be tested for the presence of certain performance enhancing drugs using: [Question ID = 51686]
1. Real time PCRs [Option ID = 86738]
2. Microarrays [Option ID = 86737]
3. Mass spectrometry [Option ID = 86736]
4. Fluorescence spectroscopy [Option ID = 86739]
Correct Answer :-
Mass spectrometry [Option ID = 86736]
Cork screw shaped forms of bacteria are [Question ID = 51721]
1. Stalked bacteria [Option ID = 86877]
2. Bacilli [Option ID = 86876]
3. Spirochaetes [Option ID = 86878]
4. Actinomycetes [Option ID = 86879]
Correct Answer :-
Spirochaetes [Option ID = 86878]
How many molecules of carbon dioxide are released after five rounds of Krebs cycle? [Question ID = 51719]
1. 18 [Option ID = 86871]
2. 12 [Option ID = 86870]
3. 10 [Option ID = 86869]
4. 6 [Option ID = 86868]
Correct Answer :-
10 [Option ID = 86869]
The atomizer is used in the following process: [Question ID = 51756]
1. Liquid-liquid extraction [Option ID = 87017]
2. None of the these [Option ID = 87019]
3. Cross flow filtration [Option ID = 87018]
4. Spray drying [Option ID = 87016]
Correct Answer :-
Spray drying [Option ID = 87016]
The process of nonreciprocal recombination by which one allele in a heterozygote is converted into the corresponding allele is called:
[Question ID = 51707]
1. Gene targeting [Option ID = 86820]
2. Gene knockout [Option ID = 86821]
39)
40)
41)
42)
43)
44)
3. Gene amplification [Option ID = 86823]
4. Gene conversion [Option ID = 86822]
Correct Answer :-
Gene conversion [Option ID = 86822]
The process of RNA inactivation by siRNAs is termed as: [Question ID = 51758]
1. RNA dysfunction [Option ID = 87027]
2. RNA silencing [Option ID = 87024]
3. RNA interference [Option ID = 87025]
4. Short RNA inactivation [Option ID = 87026]
Correct Answer :-
RNA interference [Option ID = 87025]
The production of high-fructose corn syrup (HFCS) from glucose involves which of the following enzymes? [Question ID = 51760]
1. Hexokinase [Option ID = 87035]
2. Invertase [Option ID = 87034]
3. Glucose isomerase [Option ID = 87032]
4. Glucose oxidase [Option ID = 87033]
Correct Answer :-
Glucose isomerase [Option ID = 87032]
This food-borne pathogen is very well known to grow even at refrigeration temperature:
[Question ID = 51691]
1. Salmonella enteritidis [Option ID = 86759]
2. Bacillus subtilis [Option ID = 86756]
3. Listeria monocytogenes [Option ID = 86757]
4. Vibrio cholerae [Option ID = 86758]
Correct Answer :-
Listeria monocytogenes [Option ID = 86757]
The term ecosystem was coined by: [Question ID = 51761]
1. Winogradsky [Option ID = 87036]
2. Pasteur [Option ID = 87039]
3. Flor [Option ID = 87038]
4. Tansley [Option ID = 87037]
Correct Answer :-
Tansley [Option ID = 87037]
In lactic acid fermentation the final electron acceptor is:
[Question ID = 51735]
1. Acetyl CoA [Option ID = 86934]
2. NAD
+
[Option ID = 86932]
3. Pyruvate [Option ID = 86933]
4. Glucose [Option ID = 86935]
Correct Answer :-
Pyruvate [Option ID = 86933]
Trickling filters are used in the following process [Question ID = 51770]
1. Waste water treatment [Option ID = 87072]
2. Protein recovery from biomass [Option ID = 87074]
3. Milk pasteurization [Option ID = 87073]
4. All of the these [Option ID = 87075]
Correct Answer :-
Waste water treatment [Option ID = 87072]
FirstRanker.com - FirstRanker's Choice
1)
2)
3)
4)
5)
6)
DU MSc Microbiology
Topic:- DU_J18_MSC_MICRO
Sanger?s method of sequencing is: [Question ID = 51724]
1. Sequencing by chain synthesis [Option ID = 86888]
2. Sequencing by chain cleavage [Option ID = 86890]
3. Sequencing by chain termination [Option ID = 86889]
4. Sequencing by chain ligation [Option ID = 86891]
Correct Answer :-
Sequencing by chain termination [Option ID = 86889]
What is the hydrogen ion concentration in moles/L, if pH of a solution is 3.0?
[Question ID = 51740]
1. 1 x 10
-3
[Option ID = 86954]
2. 4 x 10
-3
[Option ID = 86955]
3. 3 x 10
-3
[Option ID = 86953]
4. 3 [Option ID = 86952]
Correct Answer :-
1 x 10
-3
[Option ID = 86954]
A taxonomic system which takes into consideration a large number of phenotypic and genotypic characteristics of the organism is
called: [Question ID = 51757]
1. Numerical taxonomy [Option ID = 87021]
2. Molecular taxonomy [Option ID = 87022]
3. Phylogenetics [Option ID = 87020]
4. Phylogenomics [Option ID = 87023]
Correct Answer :-
Numerical taxonomy [Option ID = 87021]
The cytokine which is most commonly used for proliferation of bone marrow cells in vitro:
[Question ID = 51768]
1. TGF-? [Option ID = 87066]
2. GM-CSF [Option ID = 87064]
3. IFN-? [Option ID = 87065]
4. IL-2 [Option ID = 87067]
Correct Answer :-
GM-CSF [Option ID = 87064]
The interaction of two proteins within a cell can be visualized by:
[Question ID = 51689]
1. All of the above [Option ID = 86751]
2. Biomolecules with fluorescence complementation [Option ID = 86749]
3. Fluorescence recovery effectively transferred [Option ID = 86748]
4. Fluorescence resonance energy transfer [Option ID = 86750]
Correct Answer :-
Fluorescence resonance energy transfer [Option ID = 86750]
The arrangement in which flagella are distributed all around the bacterial cell is known as:
7)
8)
9)
10)
11)
[Question ID = 51727]
1. Amphitrichous [Option ID = 86901]
2. Peritrichous [Option ID = 86902]
3. Monotrichous [Option ID = 86903]
4. Lophotrichous [Option ID = 86900]
Correct Answer :-
Peritrichous [Option ID = 86902]
The dried female flowers of Humulus lupulus are used in the production of:
[Question ID = 51725]
1. Wine [Option ID = 86893]
2. Bread [Option ID = 86892]
3. Beer [Option ID = 86894]
4. Tofu [Option ID = 86895]
Correct Answer :-
Beer [Option ID = 86894]
The Swiss cheese ripening process is done using:
[Question ID = 51738]
1. Geotrichium candidum [Option ID = 86947]
2. Penicillium roqueforti [Option ID = 86945]
3. Penicillium camemberti [Option ID = 86944]
4. Propionibacterium sp. [Option ID = 86946]
Correct Answer :-
Propionibacterium sp. [Option ID = 86946]
The culture media containing heat labile constituents are best sterilized by:
[Question ID = 51687]
1. UV-irradiation [Option ID = 86743]
2. Filtration using membrane filter [Option ID = 86742]
3. Dry heat at 180
o
C for 30 min [Option ID = 86740]
4. Autoclaving at 15 psi for 30 min [Option ID = 86741]
Correct Answer :-
Filtration using membrane filter [Option ID = 86742]
The koji for miso is a culture of:
[Question ID = 51736]
1. Aspergillus oryzae [Option ID = 86937]
2. Aspergillus lentulus [Option ID = 86939]
3. Aspergillus flavus [Option ID = 86936]
4. Aspergillus fumigatus [Option ID = 86938]
Correct Answer :-
Aspergillus oryzae [Option ID = 86937]
Klinefelter syndrome is characterized by: [Question ID = 51712]
1. chromosome 19 trisomy [Option ID = 86841]
2. chromosome 21 monosomy [Option ID = 86843]
3. one or more extra X chromosomes [Option ID = 86840]
4. fragile X chromosome [Option ID = 86842]
Correct Answer :-
one or more extra X chromosomes [Option ID = 86840]
12)
13)
14)
15)
16)
17)
18)
Peptidoglycan is also known as: [Question ID = 51732]
1. N-acetyl glucosamine [Option ID = 86922]
2. N-acetyl muramic acid [Option ID = 86920]
3. Murein mucopeptide [Option ID = 86921]
4. Mesodiaminopimelic acid [Option ID = 86923]
Correct Answer :-
Murein mucopeptide [Option ID = 86921]
All of the following are sporicidal except: [Question ID = 51706]
1. Formaldehyde [Option ID = 86818]
2. Glutaraldehyde [Option ID = 86816]
3. Ethylene oxide [Option ID = 86817]
4. Alcohol [Option ID = 86819]
Correct Answer :-
Alcohol [Option ID = 86819]
The time required to kill 90% of the micro-organisms in a sample at a specific temperature is the [Question ID = 51698]
1. Decimal reduction time [Option ID = 86785]
2. Log reduction [Option ID = 86786]
3. Thermal inactivation constant [Option ID = 86787]
4. Thermal death point [Option ID = 86784]
Correct Answer :-
Decimal reduction time [Option ID = 86785]
The new antigens which appear on the tumors produced by irradiation are called: [Question ID = 51705]
1. Tumor-specific transplantation antigens (TSTA) [Option ID = 86813]
2. Carcino-embryonic antigens [Option ID = 86814]
3. Tumor associated antigens (TAA) [Option ID = 86812]
4. Tumor infiltrating antigens [Option ID = 86815]
Correct Answer :-
Tumor-specific transplantation antigens (TSTA) [Option ID = 86813]
Thermoduric bacteria are majorly found in:
[Question ID = 51729]
1. Pasteurized milk and dried milk [Option ID = 86909]
2. Ice-creams [Option ID = 86908]
3. None of the these [Option ID = 86911]
4. Vegetables [Option ID = 86910]
Correct Answer :-
Pasteurized milk and dried milk [Option ID = 86909]
The phenomenon in which the severity of symptoms in genetic disorders increases from generation to generation is called: [Question
ID = 51699]
1. Genetic drift [Option ID = 86788]
2. Genetic anticipation [Option ID = 86789]
3. Genetic polymorphism [Option ID = 86791]
4. Genetic erosion [Option ID = 86790]
Correct Answer :-
Genetic anticipation [Option ID = 86789]
Deviation in Hardy-Weinberg equilibrium in a population would be caused by [Question ID = 51720]
1. Small population size [Option ID = 86875]
2. Lack of mutation [Option ID = 86874]
3. Lack of selection [Option ID = 86873]
4. Random mating [Option ID = 86872]
19)
20)
21)
22)
23)
24)
25)
Correct Answer :-
Small population size [Option ID = 86875]
If the specific growth rate of the microorganism is 0.25 h-1, find out it?s doubling time? [Question ID = 51750]
1. 1.77 h [Option ID = 86992]
2. 2.77 h [Option ID = 86993]
3. 4.77 h [Option ID = 86995]
4. 3.77 h [Option ID = 86994]
Correct Answer :-
2.77 h [Option ID = 86993]
A polymerase that extends DNA chains in template-independent manner is: [Question ID = 51726]
1. Klenow [Option ID = 86897]
2. DNA pol I [Option ID = 86896]
3. Terminal deoxynucleotidyl transferase [Option ID = 86898]
4. Pfu DNA polymerase [Option ID = 86899]
Correct Answer :-
Terminal deoxynucleotidyl transferase [Option ID = 86898]
The Pathogenicity Islands (PAI) which are responsible for emergence of new pathogens are part of: [Question ID = 51696]
1. Integral part of integrons [Option ID = 86778]
2. Core genome of bacteria [Option ID = 86776]
3. Part of plasmids [Option ID = 86779]
4. Flexible genome pool of bacteria [Option ID = 86777]
Correct Answer :-
Core genome of bacteria [Option ID = 86776]
Universal primers used in Sanger?s sequencing of plasmid DNA are: [Question ID = 51769]
1. primers complementary to the vector sequences flanking the multiple cloning site [Option ID = 87071]
2. primers complementary to the antibiotic resistance gene of the vector [Option ID = 87069]
3. primers complementary to the multiple cloning sequence of the vector [Option ID = 87070]
4. primers of random sequence of length 18 nucleotides [Option ID = 87068]
Correct Answer :-
primers complementary to the vector sequences flanking the multiple cloning site [Option ID = 87071]
In 2011, which virus was declared by OIE to be eradicated from earth after successful culmination of global vaccination and
monitoring program for that virus?
[Question ID = 51700]
1. Rinderpest virus [Option ID = 86794]
2. Sheeppox virus [Option ID = 86793]
3. Smallpox virus [Option ID = 86792]
4. Peste-des-petits ruminants virus [Option ID = 86795]
Correct Answer :-
Rinderpest virus [Option ID = 86794]
In the latent state, Herpes simplex virus makes an 8.3 kilobase RNA transcript called: [Question ID = 51682]
1. LMT or latent membrane transcript [Option ID = 86722]
2. None of the above [Option ID = 86723]
3. LAT or latency associated transcript [Option ID = 86720]
4. LANA or latency associated nuclear antigen [Option ID = 86721]
Correct Answer :-
LAT or latency associated transcript [Option ID = 86720]
Variegation in four o?clock plants is an example of:
26)
27)
28)
29)
30)
31)
[Question ID = 51743]
1. Maternal effect [Option ID = 86964]
2. Nuclear inheritance [Option ID = 86966]
3. Organelle heredity [Option ID = 86965]
4. None of the these [Option ID = 86967]
Correct Answer :-
Organelle heredity [Option ID = 86965]
Tetracycline blocks protein synthesis by: [Question ID = 51762]
1. Inhibiting translocase enzyme [Option ID = 87043]
2. Inhibiting peptidyl transferase [Option ID = 87042]
3. Inhibiting binding of aminoacyl tRNA to ribosomes [Option ID = 87040]
4. Inhibiting initiation of translation [Option ID = 87041]
Correct Answer :-
Inhibiting binding of aminoacyl tRNA to ribosomes [Option ID = 87040]
Winogradsky column is often used for the isolation of:
[Question ID = 51734]
1. Escherichia spp. [Option ID = 86930]
2. Pyrolobus spp. [Option ID = 86931]
3. Desulfovibrio spp. [Option ID = 86928]
4. Sulfolobus spp. [Option ID = 86929]
Correct Answer :-
Desulfovibrio spp. [Option ID = 86928]
What are the end products of Entner-Doudoroff pathway? [Question ID = 51713]
1. Pyruvate [Option ID = 86846]
2. Acetaldehyde, pyruvate and CO2 [Option ID = 86847]
3. Acetaldehyde and pyruvate [Option ID = 86845]
4. Ethanol and pyruvate [Option ID = 86844]
Correct Answer :-
Ethanol and pyruvate [Option ID = 86844]
Flagella move the cell by: [Question ID = 51723]
1. An individual flagellum beating in a whip-like motion [Option ID = 86886]
2. Attaching to nearby particles and contracting [Option ID = 86885]
3. Spinning like a propeller [Option ID = 86884]
4. Many flagella beating in a synchronous whip-like motion [Option ID = 86887]
Correct Answer :-
Spinning like a propeller [Option ID = 86884]
Use of microbes for the break down or removal of toxic wastes in water and soil is called as: [Question ID = 51765]
1. Putrefaction [Option ID = 87053]
2. Recycling [Option ID = 87055]
3. Bioremediation [Option ID = 87054]
4. Decomposition [Option ID = 87052]
Correct Answer :-
Bioremediation [Option ID = 87054]
Leucine rich repeats (LRR) are an integral part of which immunological receptor? [Question ID = 51679]
1. Dendritic cell receptor [Option ID = 86710]
2. Toll-like receptor (TLR) [Option ID = 86708]
3. T cell receptor (TCR) [Option ID = 86711]
4. NK cell receptor [Option ID = 86709]
Correct Answer :-
32)
33)
34)
35)
36)
37)
38)
Toll-like receptor (TLR) [Option ID = 86708]
Chondroid of some bacteria are better known as:
[Question ID = 51755]
1. Bacterial plasmids [Option ID = 87014]
2. Bacterial plastids [Option ID = 87013]
3. Bacterial mitochondria [Option ID = 87015]
4. Mesosomes [Option ID = 87012]
Correct Answer :-
Mesosomes [Option ID = 87012]
A condition in which a single mutation causes multiple phenotypic effects is: [Question ID = 51675]
1. Multiphenotypy [Option ID = 86695]
2. Pleiotropy [Option ID = 86692]
3. Epigenesis [Option ID = 86694]
4. Epistasis [Option ID = 86693]
Correct Answer :-
Pleiotropy [Option ID = 86692]
The blood samples of athletes can be tested for the presence of certain performance enhancing drugs using: [Question ID = 51686]
1. Real time PCRs [Option ID = 86738]
2. Microarrays [Option ID = 86737]
3. Mass spectrometry [Option ID = 86736]
4. Fluorescence spectroscopy [Option ID = 86739]
Correct Answer :-
Mass spectrometry [Option ID = 86736]
Cork screw shaped forms of bacteria are [Question ID = 51721]
1. Stalked bacteria [Option ID = 86877]
2. Bacilli [Option ID = 86876]
3. Spirochaetes [Option ID = 86878]
4. Actinomycetes [Option ID = 86879]
Correct Answer :-
Spirochaetes [Option ID = 86878]
How many molecules of carbon dioxide are released after five rounds of Krebs cycle? [Question ID = 51719]
1. 18 [Option ID = 86871]
2. 12 [Option ID = 86870]
3. 10 [Option ID = 86869]
4. 6 [Option ID = 86868]
Correct Answer :-
10 [Option ID = 86869]
The atomizer is used in the following process: [Question ID = 51756]
1. Liquid-liquid extraction [Option ID = 87017]
2. None of the these [Option ID = 87019]
3. Cross flow filtration [Option ID = 87018]
4. Spray drying [Option ID = 87016]
Correct Answer :-
Spray drying [Option ID = 87016]
The process of nonreciprocal recombination by which one allele in a heterozygote is converted into the corresponding allele is called:
[Question ID = 51707]
1. Gene targeting [Option ID = 86820]
2. Gene knockout [Option ID = 86821]
39)
40)
41)
42)
43)
44)
3. Gene amplification [Option ID = 86823]
4. Gene conversion [Option ID = 86822]
Correct Answer :-
Gene conversion [Option ID = 86822]
The process of RNA inactivation by siRNAs is termed as: [Question ID = 51758]
1. RNA dysfunction [Option ID = 87027]
2. RNA silencing [Option ID = 87024]
3. RNA interference [Option ID = 87025]
4. Short RNA inactivation [Option ID = 87026]
Correct Answer :-
RNA interference [Option ID = 87025]
The production of high-fructose corn syrup (HFCS) from glucose involves which of the following enzymes? [Question ID = 51760]
1. Hexokinase [Option ID = 87035]
2. Invertase [Option ID = 87034]
3. Glucose isomerase [Option ID = 87032]
4. Glucose oxidase [Option ID = 87033]
Correct Answer :-
Glucose isomerase [Option ID = 87032]
This food-borne pathogen is very well known to grow even at refrigeration temperature:
[Question ID = 51691]
1. Salmonella enteritidis [Option ID = 86759]
2. Bacillus subtilis [Option ID = 86756]
3. Listeria monocytogenes [Option ID = 86757]
4. Vibrio cholerae [Option ID = 86758]
Correct Answer :-
Listeria monocytogenes [Option ID = 86757]
The term ecosystem was coined by: [Question ID = 51761]
1. Winogradsky [Option ID = 87036]
2. Pasteur [Option ID = 87039]
3. Flor [Option ID = 87038]
4. Tansley [Option ID = 87037]
Correct Answer :-
Tansley [Option ID = 87037]
In lactic acid fermentation the final electron acceptor is:
[Question ID = 51735]
1. Acetyl CoA [Option ID = 86934]
2. NAD
+
[Option ID = 86932]
3. Pyruvate [Option ID = 86933]
4. Glucose [Option ID = 86935]
Correct Answer :-
Pyruvate [Option ID = 86933]
Trickling filters are used in the following process [Question ID = 51770]
1. Waste water treatment [Option ID = 87072]
2. Protein recovery from biomass [Option ID = 87074]
3. Milk pasteurization [Option ID = 87073]
4. All of the these [Option ID = 87075]
Correct Answer :-
Waste water treatment [Option ID = 87072]
45)
46)
47)
48)
49)
50)
51)
The polio virus receptor which is an integral membrane protein is a member of immunoglobulin superfamily of proteins, and also is
involved in establishment of intercellular junctions between epithelial cells: [Question ID = 51688]
1. CD 55 [Option ID = 86744]
2. CD 51 [Option ID = 86746]
3. CD 15 [Option ID = 86747]
4. CD 155 [Option ID = 86745]
Correct Answer :-
CD 155 [Option ID = 86745]
Endotoxic shock produced by gram negative bacteremia is characterized by:
[Question ID = 51693]
1. Loss of large volumes of blood from host [Option ID = 86765]
2. Extensive internal haemorrhage in the organs of the host [Option ID = 86764]
3. Disseminated intravascular coagulation in the host [Option ID = 86766]
4. Release of minimal amount of cytokines in the host [Option ID = 86767]
Correct Answer :-
Disseminated intravascular coagulation in the host [Option ID = 86766]
Interferon free direct acting antivirals (DAAs) therapy has revolutionized treatment for which virus infection in recent years?
[Question ID = 51715]
1. Human papilloma virus [Option ID = 86855]
2. Hepatitis C virus [Option ID = 86854]
3. Chickenpox virus [Option ID = 86852]
4. Human Immunodeficiency virus [Option ID = 86853]
Correct Answer :-
Hepatitis C virus [Option ID = 86854]
A transmembrane protein that mediates the adhesion of cells to the extracellular matrix is: [Question ID = 51692]
1. Fibronectin [Option ID = 86761]
2. Laminin [Option ID = 86760]
3. Entactin [Option ID = 86763]
4. Integrin [Option ID = 86762]
Correct Answer :-
Integrin [Option ID = 86762]
Degranulation of most cells during hypersensitivity type I is known to produce: [Question ID = 51681]
1. Histamine, serotonin and leukotrienes [Option ID = 86718]
2. Histamine alone [Option ID = 86716]
3. Histamine, epinephrine and nor-epinephrine [Option ID = 86719]
4. Only Histamine and serotonin [Option ID = 86717]
Correct Answer :-
Histamine, serotonin and leukotrienes [Option ID = 86718]
Thiosulphate citrate bile salt sugar (TCBS) medium is used for selective isolation of:
[Question ID = 51685]
1. Non-cholera Vibrios only [Option ID = 86732]
2. Non-01 non-0139 Vibrio cholerae [Option ID = 86735]
3. Most Vibrios [Option ID = 86733]
4. Mostly Vibrio parahemolyticus [Option ID = 86734]
Correct Answer :-
Most Vibrios [Option ID = 86733]
Howard Walter Florey and Ernst Boris Chain were given the Nobel Prize for the process development of: [Question ID = 51752]
FirstRanker.com - FirstRanker's Choice
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DU MSc Microbiology
Topic:- DU_J18_MSC_MICRO
Sanger?s method of sequencing is: [Question ID = 51724]
1. Sequencing by chain synthesis [Option ID = 86888]
2. Sequencing by chain cleavage [Option ID = 86890]
3. Sequencing by chain termination [Option ID = 86889]
4. Sequencing by chain ligation [Option ID = 86891]
Correct Answer :-
Sequencing by chain termination [Option ID = 86889]
What is the hydrogen ion concentration in moles/L, if pH of a solution is 3.0?
[Question ID = 51740]
1. 1 x 10
-3
[Option ID = 86954]
2. 4 x 10
-3
[Option ID = 86955]
3. 3 x 10
-3
[Option ID = 86953]
4. 3 [Option ID = 86952]
Correct Answer :-
1 x 10
-3
[Option ID = 86954]
A taxonomic system which takes into consideration a large number of phenotypic and genotypic characteristics of the organism is
called: [Question ID = 51757]
1. Numerical taxonomy [Option ID = 87021]
2. Molecular taxonomy [Option ID = 87022]
3. Phylogenetics [Option ID = 87020]
4. Phylogenomics [Option ID = 87023]
Correct Answer :-
Numerical taxonomy [Option ID = 87021]
The cytokine which is most commonly used for proliferation of bone marrow cells in vitro:
[Question ID = 51768]
1. TGF-? [Option ID = 87066]
2. GM-CSF [Option ID = 87064]
3. IFN-? [Option ID = 87065]
4. IL-2 [Option ID = 87067]
Correct Answer :-
GM-CSF [Option ID = 87064]
The interaction of two proteins within a cell can be visualized by:
[Question ID = 51689]
1. All of the above [Option ID = 86751]
2. Biomolecules with fluorescence complementation [Option ID = 86749]
3. Fluorescence recovery effectively transferred [Option ID = 86748]
4. Fluorescence resonance energy transfer [Option ID = 86750]
Correct Answer :-
Fluorescence resonance energy transfer [Option ID = 86750]
The arrangement in which flagella are distributed all around the bacterial cell is known as:
7)
8)
9)
10)
11)
[Question ID = 51727]
1. Amphitrichous [Option ID = 86901]
2. Peritrichous [Option ID = 86902]
3. Monotrichous [Option ID = 86903]
4. Lophotrichous [Option ID = 86900]
Correct Answer :-
Peritrichous [Option ID = 86902]
The dried female flowers of Humulus lupulus are used in the production of:
[Question ID = 51725]
1. Wine [Option ID = 86893]
2. Bread [Option ID = 86892]
3. Beer [Option ID = 86894]
4. Tofu [Option ID = 86895]
Correct Answer :-
Beer [Option ID = 86894]
The Swiss cheese ripening process is done using:
[Question ID = 51738]
1. Geotrichium candidum [Option ID = 86947]
2. Penicillium roqueforti [Option ID = 86945]
3. Penicillium camemberti [Option ID = 86944]
4. Propionibacterium sp. [Option ID = 86946]
Correct Answer :-
Propionibacterium sp. [Option ID = 86946]
The culture media containing heat labile constituents are best sterilized by:
[Question ID = 51687]
1. UV-irradiation [Option ID = 86743]
2. Filtration using membrane filter [Option ID = 86742]
3. Dry heat at 180
o
C for 30 min [Option ID = 86740]
4. Autoclaving at 15 psi for 30 min [Option ID = 86741]
Correct Answer :-
Filtration using membrane filter [Option ID = 86742]
The koji for miso is a culture of:
[Question ID = 51736]
1. Aspergillus oryzae [Option ID = 86937]
2. Aspergillus lentulus [Option ID = 86939]
3. Aspergillus flavus [Option ID = 86936]
4. Aspergillus fumigatus [Option ID = 86938]
Correct Answer :-
Aspergillus oryzae [Option ID = 86937]
Klinefelter syndrome is characterized by: [Question ID = 51712]
1. chromosome 19 trisomy [Option ID = 86841]
2. chromosome 21 monosomy [Option ID = 86843]
3. one or more extra X chromosomes [Option ID = 86840]
4. fragile X chromosome [Option ID = 86842]
Correct Answer :-
one or more extra X chromosomes [Option ID = 86840]
12)
13)
14)
15)
16)
17)
18)
Peptidoglycan is also known as: [Question ID = 51732]
1. N-acetyl glucosamine [Option ID = 86922]
2. N-acetyl muramic acid [Option ID = 86920]
3. Murein mucopeptide [Option ID = 86921]
4. Mesodiaminopimelic acid [Option ID = 86923]
Correct Answer :-
Murein mucopeptide [Option ID = 86921]
All of the following are sporicidal except: [Question ID = 51706]
1. Formaldehyde [Option ID = 86818]
2. Glutaraldehyde [Option ID = 86816]
3. Ethylene oxide [Option ID = 86817]
4. Alcohol [Option ID = 86819]
Correct Answer :-
Alcohol [Option ID = 86819]
The time required to kill 90% of the micro-organisms in a sample at a specific temperature is the [Question ID = 51698]
1. Decimal reduction time [Option ID = 86785]
2. Log reduction [Option ID = 86786]
3. Thermal inactivation constant [Option ID = 86787]
4. Thermal death point [Option ID = 86784]
Correct Answer :-
Decimal reduction time [Option ID = 86785]
The new antigens which appear on the tumors produced by irradiation are called: [Question ID = 51705]
1. Tumor-specific transplantation antigens (TSTA) [Option ID = 86813]
2. Carcino-embryonic antigens [Option ID = 86814]
3. Tumor associated antigens (TAA) [Option ID = 86812]
4. Tumor infiltrating antigens [Option ID = 86815]
Correct Answer :-
Tumor-specific transplantation antigens (TSTA) [Option ID = 86813]
Thermoduric bacteria are majorly found in:
[Question ID = 51729]
1. Pasteurized milk and dried milk [Option ID = 86909]
2. Ice-creams [Option ID = 86908]
3. None of the these [Option ID = 86911]
4. Vegetables [Option ID = 86910]
Correct Answer :-
Pasteurized milk and dried milk [Option ID = 86909]
The phenomenon in which the severity of symptoms in genetic disorders increases from generation to generation is called: [Question
ID = 51699]
1. Genetic drift [Option ID = 86788]
2. Genetic anticipation [Option ID = 86789]
3. Genetic polymorphism [Option ID = 86791]
4. Genetic erosion [Option ID = 86790]
Correct Answer :-
Genetic anticipation [Option ID = 86789]
Deviation in Hardy-Weinberg equilibrium in a population would be caused by [Question ID = 51720]
1. Small population size [Option ID = 86875]
2. Lack of mutation [Option ID = 86874]
3. Lack of selection [Option ID = 86873]
4. Random mating [Option ID = 86872]
19)
20)
21)
22)
23)
24)
25)
Correct Answer :-
Small population size [Option ID = 86875]
If the specific growth rate of the microorganism is 0.25 h-1, find out it?s doubling time? [Question ID = 51750]
1. 1.77 h [Option ID = 86992]
2. 2.77 h [Option ID = 86993]
3. 4.77 h [Option ID = 86995]
4. 3.77 h [Option ID = 86994]
Correct Answer :-
2.77 h [Option ID = 86993]
A polymerase that extends DNA chains in template-independent manner is: [Question ID = 51726]
1. Klenow [Option ID = 86897]
2. DNA pol I [Option ID = 86896]
3. Terminal deoxynucleotidyl transferase [Option ID = 86898]
4. Pfu DNA polymerase [Option ID = 86899]
Correct Answer :-
Terminal deoxynucleotidyl transferase [Option ID = 86898]
The Pathogenicity Islands (PAI) which are responsible for emergence of new pathogens are part of: [Question ID = 51696]
1. Integral part of integrons [Option ID = 86778]
2. Core genome of bacteria [Option ID = 86776]
3. Part of plasmids [Option ID = 86779]
4. Flexible genome pool of bacteria [Option ID = 86777]
Correct Answer :-
Core genome of bacteria [Option ID = 86776]
Universal primers used in Sanger?s sequencing of plasmid DNA are: [Question ID = 51769]
1. primers complementary to the vector sequences flanking the multiple cloning site [Option ID = 87071]
2. primers complementary to the antibiotic resistance gene of the vector [Option ID = 87069]
3. primers complementary to the multiple cloning sequence of the vector [Option ID = 87070]
4. primers of random sequence of length 18 nucleotides [Option ID = 87068]
Correct Answer :-
primers complementary to the vector sequences flanking the multiple cloning site [Option ID = 87071]
In 2011, which virus was declared by OIE to be eradicated from earth after successful culmination of global vaccination and
monitoring program for that virus?
[Question ID = 51700]
1. Rinderpest virus [Option ID = 86794]
2. Sheeppox virus [Option ID = 86793]
3. Smallpox virus [Option ID = 86792]
4. Peste-des-petits ruminants virus [Option ID = 86795]
Correct Answer :-
Rinderpest virus [Option ID = 86794]
In the latent state, Herpes simplex virus makes an 8.3 kilobase RNA transcript called: [Question ID = 51682]
1. LMT or latent membrane transcript [Option ID = 86722]
2. None of the above [Option ID = 86723]
3. LAT or latency associated transcript [Option ID = 86720]
4. LANA or latency associated nuclear antigen [Option ID = 86721]
Correct Answer :-
LAT or latency associated transcript [Option ID = 86720]
Variegation in four o?clock plants is an example of:
26)
27)
28)
29)
30)
31)
[Question ID = 51743]
1. Maternal effect [Option ID = 86964]
2. Nuclear inheritance [Option ID = 86966]
3. Organelle heredity [Option ID = 86965]
4. None of the these [Option ID = 86967]
Correct Answer :-
Organelle heredity [Option ID = 86965]
Tetracycline blocks protein synthesis by: [Question ID = 51762]
1. Inhibiting translocase enzyme [Option ID = 87043]
2. Inhibiting peptidyl transferase [Option ID = 87042]
3. Inhibiting binding of aminoacyl tRNA to ribosomes [Option ID = 87040]
4. Inhibiting initiation of translation [Option ID = 87041]
Correct Answer :-
Inhibiting binding of aminoacyl tRNA to ribosomes [Option ID = 87040]
Winogradsky column is often used for the isolation of:
[Question ID = 51734]
1. Escherichia spp. [Option ID = 86930]
2. Pyrolobus spp. [Option ID = 86931]
3. Desulfovibrio spp. [Option ID = 86928]
4. Sulfolobus spp. [Option ID = 86929]
Correct Answer :-
Desulfovibrio spp. [Option ID = 86928]
What are the end products of Entner-Doudoroff pathway? [Question ID = 51713]
1. Pyruvate [Option ID = 86846]
2. Acetaldehyde, pyruvate and CO2 [Option ID = 86847]
3. Acetaldehyde and pyruvate [Option ID = 86845]
4. Ethanol and pyruvate [Option ID = 86844]
Correct Answer :-
Ethanol and pyruvate [Option ID = 86844]
Flagella move the cell by: [Question ID = 51723]
1. An individual flagellum beating in a whip-like motion [Option ID = 86886]
2. Attaching to nearby particles and contracting [Option ID = 86885]
3. Spinning like a propeller [Option ID = 86884]
4. Many flagella beating in a synchronous whip-like motion [Option ID = 86887]
Correct Answer :-
Spinning like a propeller [Option ID = 86884]
Use of microbes for the break down or removal of toxic wastes in water and soil is called as: [Question ID = 51765]
1. Putrefaction [Option ID = 87053]
2. Recycling [Option ID = 87055]
3. Bioremediation [Option ID = 87054]
4. Decomposition [Option ID = 87052]
Correct Answer :-
Bioremediation [Option ID = 87054]
Leucine rich repeats (LRR) are an integral part of which immunological receptor? [Question ID = 51679]
1. Dendritic cell receptor [Option ID = 86710]
2. Toll-like receptor (TLR) [Option ID = 86708]
3. T cell receptor (TCR) [Option ID = 86711]
4. NK cell receptor [Option ID = 86709]
Correct Answer :-
32)
33)
34)
35)
36)
37)
38)
Toll-like receptor (TLR) [Option ID = 86708]
Chondroid of some bacteria are better known as:
[Question ID = 51755]
1. Bacterial plasmids [Option ID = 87014]
2. Bacterial plastids [Option ID = 87013]
3. Bacterial mitochondria [Option ID = 87015]
4. Mesosomes [Option ID = 87012]
Correct Answer :-
Mesosomes [Option ID = 87012]
A condition in which a single mutation causes multiple phenotypic effects is: [Question ID = 51675]
1. Multiphenotypy [Option ID = 86695]
2. Pleiotropy [Option ID = 86692]
3. Epigenesis [Option ID = 86694]
4. Epistasis [Option ID = 86693]
Correct Answer :-
Pleiotropy [Option ID = 86692]
The blood samples of athletes can be tested for the presence of certain performance enhancing drugs using: [Question ID = 51686]
1. Real time PCRs [Option ID = 86738]
2. Microarrays [Option ID = 86737]
3. Mass spectrometry [Option ID = 86736]
4. Fluorescence spectroscopy [Option ID = 86739]
Correct Answer :-
Mass spectrometry [Option ID = 86736]
Cork screw shaped forms of bacteria are [Question ID = 51721]
1. Stalked bacteria [Option ID = 86877]
2. Bacilli [Option ID = 86876]
3. Spirochaetes [Option ID = 86878]
4. Actinomycetes [Option ID = 86879]
Correct Answer :-
Spirochaetes [Option ID = 86878]
How many molecules of carbon dioxide are released after five rounds of Krebs cycle? [Question ID = 51719]
1. 18 [Option ID = 86871]
2. 12 [Option ID = 86870]
3. 10 [Option ID = 86869]
4. 6 [Option ID = 86868]
Correct Answer :-
10 [Option ID = 86869]
The atomizer is used in the following process: [Question ID = 51756]
1. Liquid-liquid extraction [Option ID = 87017]
2. None of the these [Option ID = 87019]
3. Cross flow filtration [Option ID = 87018]
4. Spray drying [Option ID = 87016]
Correct Answer :-
Spray drying [Option ID = 87016]
The process of nonreciprocal recombination by which one allele in a heterozygote is converted into the corresponding allele is called:
[Question ID = 51707]
1. Gene targeting [Option ID = 86820]
2. Gene knockout [Option ID = 86821]
39)
40)
41)
42)
43)
44)
3. Gene amplification [Option ID = 86823]
4. Gene conversion [Option ID = 86822]
Correct Answer :-
Gene conversion [Option ID = 86822]
The process of RNA inactivation by siRNAs is termed as: [Question ID = 51758]
1. RNA dysfunction [Option ID = 87027]
2. RNA silencing [Option ID = 87024]
3. RNA interference [Option ID = 87025]
4. Short RNA inactivation [Option ID = 87026]
Correct Answer :-
RNA interference [Option ID = 87025]
The production of high-fructose corn syrup (HFCS) from glucose involves which of the following enzymes? [Question ID = 51760]
1. Hexokinase [Option ID = 87035]
2. Invertase [Option ID = 87034]
3. Glucose isomerase [Option ID = 87032]
4. Glucose oxidase [Option ID = 87033]
Correct Answer :-
Glucose isomerase [Option ID = 87032]
This food-borne pathogen is very well known to grow even at refrigeration temperature:
[Question ID = 51691]
1. Salmonella enteritidis [Option ID = 86759]
2. Bacillus subtilis [Option ID = 86756]
3. Listeria monocytogenes [Option ID = 86757]
4. Vibrio cholerae [Option ID = 86758]
Correct Answer :-
Listeria monocytogenes [Option ID = 86757]
The term ecosystem was coined by: [Question ID = 51761]
1. Winogradsky [Option ID = 87036]
2. Pasteur [Option ID = 87039]
3. Flor [Option ID = 87038]
4. Tansley [Option ID = 87037]
Correct Answer :-
Tansley [Option ID = 87037]
In lactic acid fermentation the final electron acceptor is:
[Question ID = 51735]
1. Acetyl CoA [Option ID = 86934]
2. NAD
+
[Option ID = 86932]
3. Pyruvate [Option ID = 86933]
4. Glucose [Option ID = 86935]
Correct Answer :-
Pyruvate [Option ID = 86933]
Trickling filters are used in the following process [Question ID = 51770]
1. Waste water treatment [Option ID = 87072]
2. Protein recovery from biomass [Option ID = 87074]
3. Milk pasteurization [Option ID = 87073]
4. All of the these [Option ID = 87075]
Correct Answer :-
Waste water treatment [Option ID = 87072]
45)
46)
47)
48)
49)
50)
51)
The polio virus receptor which is an integral membrane protein is a member of immunoglobulin superfamily of proteins, and also is
involved in establishment of intercellular junctions between epithelial cells: [Question ID = 51688]
1. CD 55 [Option ID = 86744]
2. CD 51 [Option ID = 86746]
3. CD 15 [Option ID = 86747]
4. CD 155 [Option ID = 86745]
Correct Answer :-
CD 155 [Option ID = 86745]
Endotoxic shock produced by gram negative bacteremia is characterized by:
[Question ID = 51693]
1. Loss of large volumes of blood from host [Option ID = 86765]
2. Extensive internal haemorrhage in the organs of the host [Option ID = 86764]
3. Disseminated intravascular coagulation in the host [Option ID = 86766]
4. Release of minimal amount of cytokines in the host [Option ID = 86767]
Correct Answer :-
Disseminated intravascular coagulation in the host [Option ID = 86766]
Interferon free direct acting antivirals (DAAs) therapy has revolutionized treatment for which virus infection in recent years?
[Question ID = 51715]
1. Human papilloma virus [Option ID = 86855]
2. Hepatitis C virus [Option ID = 86854]
3. Chickenpox virus [Option ID = 86852]
4. Human Immunodeficiency virus [Option ID = 86853]
Correct Answer :-
Hepatitis C virus [Option ID = 86854]
A transmembrane protein that mediates the adhesion of cells to the extracellular matrix is: [Question ID = 51692]
1. Fibronectin [Option ID = 86761]
2. Laminin [Option ID = 86760]
3. Entactin [Option ID = 86763]
4. Integrin [Option ID = 86762]
Correct Answer :-
Integrin [Option ID = 86762]
Degranulation of most cells during hypersensitivity type I is known to produce: [Question ID = 51681]
1. Histamine, serotonin and leukotrienes [Option ID = 86718]
2. Histamine alone [Option ID = 86716]
3. Histamine, epinephrine and nor-epinephrine [Option ID = 86719]
4. Only Histamine and serotonin [Option ID = 86717]
Correct Answer :-
Histamine, serotonin and leukotrienes [Option ID = 86718]
Thiosulphate citrate bile salt sugar (TCBS) medium is used for selective isolation of:
[Question ID = 51685]
1. Non-cholera Vibrios only [Option ID = 86732]
2. Non-01 non-0139 Vibrio cholerae [Option ID = 86735]
3. Most Vibrios [Option ID = 86733]
4. Mostly Vibrio parahemolyticus [Option ID = 86734]
Correct Answer :-
Most Vibrios [Option ID = 86733]
Howard Walter Florey and Ernst Boris Chain were given the Nobel Prize for the process development of: [Question ID = 51752]
52)
53)
54)
55)
56)
57)
58)
1. Monoclonal antibodies [Option ID = 87000]
2. Penicillin [Option ID = 87001]
3. Erythromycin [Option ID = 87002]
4. Glutamic acid [Option ID = 87003]
Correct Answer :-
Penicillin [Option ID = 87001]
A type of cell adhesion molecule that recognizes oligosaccharides exposed on the cell surface: [Question ID = 51710]
1. Exportins [Option ID = 86834]
2. Integrins [Option ID = 86835]
3. Laminins [Option ID = 86832]
4. Selectins [Option ID = 86833]
Correct Answer :-
Selectins [Option ID = 86833]
The method of post-transcriptional gene silencing is particularly useful in: [Question ID = 51753]
1. Animals [Option ID = 87004]
2. Microbes [Option ID = 87007]
3. Plants [Option ID = 87005]
4. Insects [Option ID = 87006]
Correct Answer :-
Plants [Option ID = 87005]
When B DNA is slightly dehydrated, it acquires: [Question ID = 51733]
1. Z conformation [Option ID = 86926]
2. Positive supercoils [Option ID = 86925]
3. A conformation [Option ID = 86927]
4. Negative supercoils [Option ID = 86924]
Correct Answer :-
A conformation [Option ID = 86927]
The Toll-like receptor (TLR) which is known to bind the lipopolysaccharide (LPS) of gram negative bacteria: [Question ID = 51677]
1. TLR-4 [Option ID = 86702]
2. TLR-2 [Option ID = 86701]
3. TLR-1 [Option ID = 86700]
4. TLR-10 [Option ID = 86703]
Correct Answer :-
TLR-4 [Option ID = 86702]
Which of the following skin disinfectant(s) is/are used frequently? [Question ID = 51703]
1. Isopropyl alcohol [Option ID = 86804]
2. Ethyl alcohol [Option ID = 86805]
3. Both of the above [Option ID = 86806]
4. None of the these [Option ID = 86807]
Correct Answer :-
Both of the above [Option ID = 86806]
Which of the following statements is not true? [Question ID = 51672]
1. Linkers are often used as cloning aids when making cDNA libraries [Option ID = 86682]
2. cDNA libraries made in lambda phage vectors are screened by colony hybridization. [Option ID = 86683]
3. To obtain single stranded DNA of a target sequence we clone the sequence into a phagemid [Option ID = 86681]
4. When cloning large genomic contigs into YACs we may get chimeric inserts [Option ID = 86680]
Correct Answer :-
cDNA libraries made in lambda phage vectors are screened by colony hybridization. [Option ID = 86683]
Which of the following has beads on a string structure? [Question ID = 51674]
FirstRanker.com - FirstRanker's Choice
1)
2)
3)
4)
5)
6)
DU MSc Microbiology
Topic:- DU_J18_MSC_MICRO
Sanger?s method of sequencing is: [Question ID = 51724]
1. Sequencing by chain synthesis [Option ID = 86888]
2. Sequencing by chain cleavage [Option ID = 86890]
3. Sequencing by chain termination [Option ID = 86889]
4. Sequencing by chain ligation [Option ID = 86891]
Correct Answer :-
Sequencing by chain termination [Option ID = 86889]
What is the hydrogen ion concentration in moles/L, if pH of a solution is 3.0?
[Question ID = 51740]
1. 1 x 10
-3
[Option ID = 86954]
2. 4 x 10
-3
[Option ID = 86955]
3. 3 x 10
-3
[Option ID = 86953]
4. 3 [Option ID = 86952]
Correct Answer :-
1 x 10
-3
[Option ID = 86954]
A taxonomic system which takes into consideration a large number of phenotypic and genotypic characteristics of the organism is
called: [Question ID = 51757]
1. Numerical taxonomy [Option ID = 87021]
2. Molecular taxonomy [Option ID = 87022]
3. Phylogenetics [Option ID = 87020]
4. Phylogenomics [Option ID = 87023]
Correct Answer :-
Numerical taxonomy [Option ID = 87021]
The cytokine which is most commonly used for proliferation of bone marrow cells in vitro:
[Question ID = 51768]
1. TGF-? [Option ID = 87066]
2. GM-CSF [Option ID = 87064]
3. IFN-? [Option ID = 87065]
4. IL-2 [Option ID = 87067]
Correct Answer :-
GM-CSF [Option ID = 87064]
The interaction of two proteins within a cell can be visualized by:
[Question ID = 51689]
1. All of the above [Option ID = 86751]
2. Biomolecules with fluorescence complementation [Option ID = 86749]
3. Fluorescence recovery effectively transferred [Option ID = 86748]
4. Fluorescence resonance energy transfer [Option ID = 86750]
Correct Answer :-
Fluorescence resonance energy transfer [Option ID = 86750]
The arrangement in which flagella are distributed all around the bacterial cell is known as:
7)
8)
9)
10)
11)
[Question ID = 51727]
1. Amphitrichous [Option ID = 86901]
2. Peritrichous [Option ID = 86902]
3. Monotrichous [Option ID = 86903]
4. Lophotrichous [Option ID = 86900]
Correct Answer :-
Peritrichous [Option ID = 86902]
The dried female flowers of Humulus lupulus are used in the production of:
[Question ID = 51725]
1. Wine [Option ID = 86893]
2. Bread [Option ID = 86892]
3. Beer [Option ID = 86894]
4. Tofu [Option ID = 86895]
Correct Answer :-
Beer [Option ID = 86894]
The Swiss cheese ripening process is done using:
[Question ID = 51738]
1. Geotrichium candidum [Option ID = 86947]
2. Penicillium roqueforti [Option ID = 86945]
3. Penicillium camemberti [Option ID = 86944]
4. Propionibacterium sp. [Option ID = 86946]
Correct Answer :-
Propionibacterium sp. [Option ID = 86946]
The culture media containing heat labile constituents are best sterilized by:
[Question ID = 51687]
1. UV-irradiation [Option ID = 86743]
2. Filtration using membrane filter [Option ID = 86742]
3. Dry heat at 180
o
C for 30 min [Option ID = 86740]
4. Autoclaving at 15 psi for 30 min [Option ID = 86741]
Correct Answer :-
Filtration using membrane filter [Option ID = 86742]
The koji for miso is a culture of:
[Question ID = 51736]
1. Aspergillus oryzae [Option ID = 86937]
2. Aspergillus lentulus [Option ID = 86939]
3. Aspergillus flavus [Option ID = 86936]
4. Aspergillus fumigatus [Option ID = 86938]
Correct Answer :-
Aspergillus oryzae [Option ID = 86937]
Klinefelter syndrome is characterized by: [Question ID = 51712]
1. chromosome 19 trisomy [Option ID = 86841]
2. chromosome 21 monosomy [Option ID = 86843]
3. one or more extra X chromosomes [Option ID = 86840]
4. fragile X chromosome [Option ID = 86842]
Correct Answer :-
one or more extra X chromosomes [Option ID = 86840]
12)
13)
14)
15)
16)
17)
18)
Peptidoglycan is also known as: [Question ID = 51732]
1. N-acetyl glucosamine [Option ID = 86922]
2. N-acetyl muramic acid [Option ID = 86920]
3. Murein mucopeptide [Option ID = 86921]
4. Mesodiaminopimelic acid [Option ID = 86923]
Correct Answer :-
Murein mucopeptide [Option ID = 86921]
All of the following are sporicidal except: [Question ID = 51706]
1. Formaldehyde [Option ID = 86818]
2. Glutaraldehyde [Option ID = 86816]
3. Ethylene oxide [Option ID = 86817]
4. Alcohol [Option ID = 86819]
Correct Answer :-
Alcohol [Option ID = 86819]
The time required to kill 90% of the micro-organisms in a sample at a specific temperature is the [Question ID = 51698]
1. Decimal reduction time [Option ID = 86785]
2. Log reduction [Option ID = 86786]
3. Thermal inactivation constant [Option ID = 86787]
4. Thermal death point [Option ID = 86784]
Correct Answer :-
Decimal reduction time [Option ID = 86785]
The new antigens which appear on the tumors produced by irradiation are called: [Question ID = 51705]
1. Tumor-specific transplantation antigens (TSTA) [Option ID = 86813]
2. Carcino-embryonic antigens [Option ID = 86814]
3. Tumor associated antigens (TAA) [Option ID = 86812]
4. Tumor infiltrating antigens [Option ID = 86815]
Correct Answer :-
Tumor-specific transplantation antigens (TSTA) [Option ID = 86813]
Thermoduric bacteria are majorly found in:
[Question ID = 51729]
1. Pasteurized milk and dried milk [Option ID = 86909]
2. Ice-creams [Option ID = 86908]
3. None of the these [Option ID = 86911]
4. Vegetables [Option ID = 86910]
Correct Answer :-
Pasteurized milk and dried milk [Option ID = 86909]
The phenomenon in which the severity of symptoms in genetic disorders increases from generation to generation is called: [Question
ID = 51699]
1. Genetic drift [Option ID = 86788]
2. Genetic anticipation [Option ID = 86789]
3. Genetic polymorphism [Option ID = 86791]
4. Genetic erosion [Option ID = 86790]
Correct Answer :-
Genetic anticipation [Option ID = 86789]
Deviation in Hardy-Weinberg equilibrium in a population would be caused by [Question ID = 51720]
1. Small population size [Option ID = 86875]
2. Lack of mutation [Option ID = 86874]
3. Lack of selection [Option ID = 86873]
4. Random mating [Option ID = 86872]
19)
20)
21)
22)
23)
24)
25)
Correct Answer :-
Small population size [Option ID = 86875]
If the specific growth rate of the microorganism is 0.25 h-1, find out it?s doubling time? [Question ID = 51750]
1. 1.77 h [Option ID = 86992]
2. 2.77 h [Option ID = 86993]
3. 4.77 h [Option ID = 86995]
4. 3.77 h [Option ID = 86994]
Correct Answer :-
2.77 h [Option ID = 86993]
A polymerase that extends DNA chains in template-independent manner is: [Question ID = 51726]
1. Klenow [Option ID = 86897]
2. DNA pol I [Option ID = 86896]
3. Terminal deoxynucleotidyl transferase [Option ID = 86898]
4. Pfu DNA polymerase [Option ID = 86899]
Correct Answer :-
Terminal deoxynucleotidyl transferase [Option ID = 86898]
The Pathogenicity Islands (PAI) which are responsible for emergence of new pathogens are part of: [Question ID = 51696]
1. Integral part of integrons [Option ID = 86778]
2. Core genome of bacteria [Option ID = 86776]
3. Part of plasmids [Option ID = 86779]
4. Flexible genome pool of bacteria [Option ID = 86777]
Correct Answer :-
Core genome of bacteria [Option ID = 86776]
Universal primers used in Sanger?s sequencing of plasmid DNA are: [Question ID = 51769]
1. primers complementary to the vector sequences flanking the multiple cloning site [Option ID = 87071]
2. primers complementary to the antibiotic resistance gene of the vector [Option ID = 87069]
3. primers complementary to the multiple cloning sequence of the vector [Option ID = 87070]
4. primers of random sequence of length 18 nucleotides [Option ID = 87068]
Correct Answer :-
primers complementary to the vector sequences flanking the multiple cloning site [Option ID = 87071]
In 2011, which virus was declared by OIE to be eradicated from earth after successful culmination of global vaccination and
monitoring program for that virus?
[Question ID = 51700]
1. Rinderpest virus [Option ID = 86794]
2. Sheeppox virus [Option ID = 86793]
3. Smallpox virus [Option ID = 86792]
4. Peste-des-petits ruminants virus [Option ID = 86795]
Correct Answer :-
Rinderpest virus [Option ID = 86794]
In the latent state, Herpes simplex virus makes an 8.3 kilobase RNA transcript called: [Question ID = 51682]
1. LMT or latent membrane transcript [Option ID = 86722]
2. None of the above [Option ID = 86723]
3. LAT or latency associated transcript [Option ID = 86720]
4. LANA or latency associated nuclear antigen [Option ID = 86721]
Correct Answer :-
LAT or latency associated transcript [Option ID = 86720]
Variegation in four o?clock plants is an example of:
26)
27)
28)
29)
30)
31)
[Question ID = 51743]
1. Maternal effect [Option ID = 86964]
2. Nuclear inheritance [Option ID = 86966]
3. Organelle heredity [Option ID = 86965]
4. None of the these [Option ID = 86967]
Correct Answer :-
Organelle heredity [Option ID = 86965]
Tetracycline blocks protein synthesis by: [Question ID = 51762]
1. Inhibiting translocase enzyme [Option ID = 87043]
2. Inhibiting peptidyl transferase [Option ID = 87042]
3. Inhibiting binding of aminoacyl tRNA to ribosomes [Option ID = 87040]
4. Inhibiting initiation of translation [Option ID = 87041]
Correct Answer :-
Inhibiting binding of aminoacyl tRNA to ribosomes [Option ID = 87040]
Winogradsky column is often used for the isolation of:
[Question ID = 51734]
1. Escherichia spp. [Option ID = 86930]
2. Pyrolobus spp. [Option ID = 86931]
3. Desulfovibrio spp. [Option ID = 86928]
4. Sulfolobus spp. [Option ID = 86929]
Correct Answer :-
Desulfovibrio spp. [Option ID = 86928]
What are the end products of Entner-Doudoroff pathway? [Question ID = 51713]
1. Pyruvate [Option ID = 86846]
2. Acetaldehyde, pyruvate and CO2 [Option ID = 86847]
3. Acetaldehyde and pyruvate [Option ID = 86845]
4. Ethanol and pyruvate [Option ID = 86844]
Correct Answer :-
Ethanol and pyruvate [Option ID = 86844]
Flagella move the cell by: [Question ID = 51723]
1. An individual flagellum beating in a whip-like motion [Option ID = 86886]
2. Attaching to nearby particles and contracting [Option ID = 86885]
3. Spinning like a propeller [Option ID = 86884]
4. Many flagella beating in a synchronous whip-like motion [Option ID = 86887]
Correct Answer :-
Spinning like a propeller [Option ID = 86884]
Use of microbes for the break down or removal of toxic wastes in water and soil is called as: [Question ID = 51765]
1. Putrefaction [Option ID = 87053]
2. Recycling [Option ID = 87055]
3. Bioremediation [Option ID = 87054]
4. Decomposition [Option ID = 87052]
Correct Answer :-
Bioremediation [Option ID = 87054]
Leucine rich repeats (LRR) are an integral part of which immunological receptor? [Question ID = 51679]
1. Dendritic cell receptor [Option ID = 86710]
2. Toll-like receptor (TLR) [Option ID = 86708]
3. T cell receptor (TCR) [Option ID = 86711]
4. NK cell receptor [Option ID = 86709]
Correct Answer :-
32)
33)
34)
35)
36)
37)
38)
Toll-like receptor (TLR) [Option ID = 86708]
Chondroid of some bacteria are better known as:
[Question ID = 51755]
1. Bacterial plasmids [Option ID = 87014]
2. Bacterial plastids [Option ID = 87013]
3. Bacterial mitochondria [Option ID = 87015]
4. Mesosomes [Option ID = 87012]
Correct Answer :-
Mesosomes [Option ID = 87012]
A condition in which a single mutation causes multiple phenotypic effects is: [Question ID = 51675]
1. Multiphenotypy [Option ID = 86695]
2. Pleiotropy [Option ID = 86692]
3. Epigenesis [Option ID = 86694]
4. Epistasis [Option ID = 86693]
Correct Answer :-
Pleiotropy [Option ID = 86692]
The blood samples of athletes can be tested for the presence of certain performance enhancing drugs using: [Question ID = 51686]
1. Real time PCRs [Option ID = 86738]
2. Microarrays [Option ID = 86737]
3. Mass spectrometry [Option ID = 86736]
4. Fluorescence spectroscopy [Option ID = 86739]
Correct Answer :-
Mass spectrometry [Option ID = 86736]
Cork screw shaped forms of bacteria are [Question ID = 51721]
1. Stalked bacteria [Option ID = 86877]
2. Bacilli [Option ID = 86876]
3. Spirochaetes [Option ID = 86878]
4. Actinomycetes [Option ID = 86879]
Correct Answer :-
Spirochaetes [Option ID = 86878]
How many molecules of carbon dioxide are released after five rounds of Krebs cycle? [Question ID = 51719]
1. 18 [Option ID = 86871]
2. 12 [Option ID = 86870]
3. 10 [Option ID = 86869]
4. 6 [Option ID = 86868]
Correct Answer :-
10 [Option ID = 86869]
The atomizer is used in the following process: [Question ID = 51756]
1. Liquid-liquid extraction [Option ID = 87017]
2. None of the these [Option ID = 87019]
3. Cross flow filtration [Option ID = 87018]
4. Spray drying [Option ID = 87016]
Correct Answer :-
Spray drying [Option ID = 87016]
The process of nonreciprocal recombination by which one allele in a heterozygote is converted into the corresponding allele is called:
[Question ID = 51707]
1. Gene targeting [Option ID = 86820]
2. Gene knockout [Option ID = 86821]
39)
40)
41)
42)
43)
44)
3. Gene amplification [Option ID = 86823]
4. Gene conversion [Option ID = 86822]
Correct Answer :-
Gene conversion [Option ID = 86822]
The process of RNA inactivation by siRNAs is termed as: [Question ID = 51758]
1. RNA dysfunction [Option ID = 87027]
2. RNA silencing [Option ID = 87024]
3. RNA interference [Option ID = 87025]
4. Short RNA inactivation [Option ID = 87026]
Correct Answer :-
RNA interference [Option ID = 87025]
The production of high-fructose corn syrup (HFCS) from glucose involves which of the following enzymes? [Question ID = 51760]
1. Hexokinase [Option ID = 87035]
2. Invertase [Option ID = 87034]
3. Glucose isomerase [Option ID = 87032]
4. Glucose oxidase [Option ID = 87033]
Correct Answer :-
Glucose isomerase [Option ID = 87032]
This food-borne pathogen is very well known to grow even at refrigeration temperature:
[Question ID = 51691]
1. Salmonella enteritidis [Option ID = 86759]
2. Bacillus subtilis [Option ID = 86756]
3. Listeria monocytogenes [Option ID = 86757]
4. Vibrio cholerae [Option ID = 86758]
Correct Answer :-
Listeria monocytogenes [Option ID = 86757]
The term ecosystem was coined by: [Question ID = 51761]
1. Winogradsky [Option ID = 87036]
2. Pasteur [Option ID = 87039]
3. Flor [Option ID = 87038]
4. Tansley [Option ID = 87037]
Correct Answer :-
Tansley [Option ID = 87037]
In lactic acid fermentation the final electron acceptor is:
[Question ID = 51735]
1. Acetyl CoA [Option ID = 86934]
2. NAD
+
[Option ID = 86932]
3. Pyruvate [Option ID = 86933]
4. Glucose [Option ID = 86935]
Correct Answer :-
Pyruvate [Option ID = 86933]
Trickling filters are used in the following process [Question ID = 51770]
1. Waste water treatment [Option ID = 87072]
2. Protein recovery from biomass [Option ID = 87074]
3. Milk pasteurization [Option ID = 87073]
4. All of the these [Option ID = 87075]
Correct Answer :-
Waste water treatment [Option ID = 87072]
45)
46)
47)
48)
49)
50)
51)
The polio virus receptor which is an integral membrane protein is a member of immunoglobulin superfamily of proteins, and also is
involved in establishment of intercellular junctions between epithelial cells: [Question ID = 51688]
1. CD 55 [Option ID = 86744]
2. CD 51 [Option ID = 86746]
3. CD 15 [Option ID = 86747]
4. CD 155 [Option ID = 86745]
Correct Answer :-
CD 155 [Option ID = 86745]
Endotoxic shock produced by gram negative bacteremia is characterized by:
[Question ID = 51693]
1. Loss of large volumes of blood from host [Option ID = 86765]
2. Extensive internal haemorrhage in the organs of the host [Option ID = 86764]
3. Disseminated intravascular coagulation in the host [Option ID = 86766]
4. Release of minimal amount of cytokines in the host [Option ID = 86767]
Correct Answer :-
Disseminated intravascular coagulation in the host [Option ID = 86766]
Interferon free direct acting antivirals (DAAs) therapy has revolutionized treatment for which virus infection in recent years?
[Question ID = 51715]
1. Human papilloma virus [Option ID = 86855]
2. Hepatitis C virus [Option ID = 86854]
3. Chickenpox virus [Option ID = 86852]
4. Human Immunodeficiency virus [Option ID = 86853]
Correct Answer :-
Hepatitis C virus [Option ID = 86854]
A transmembrane protein that mediates the adhesion of cells to the extracellular matrix is: [Question ID = 51692]
1. Fibronectin [Option ID = 86761]
2. Laminin [Option ID = 86760]
3. Entactin [Option ID = 86763]
4. Integrin [Option ID = 86762]
Correct Answer :-
Integrin [Option ID = 86762]
Degranulation of most cells during hypersensitivity type I is known to produce: [Question ID = 51681]
1. Histamine, serotonin and leukotrienes [Option ID = 86718]
2. Histamine alone [Option ID = 86716]
3. Histamine, epinephrine and nor-epinephrine [Option ID = 86719]
4. Only Histamine and serotonin [Option ID = 86717]
Correct Answer :-
Histamine, serotonin and leukotrienes [Option ID = 86718]
Thiosulphate citrate bile salt sugar (TCBS) medium is used for selective isolation of:
[Question ID = 51685]
1. Non-cholera Vibrios only [Option ID = 86732]
2. Non-01 non-0139 Vibrio cholerae [Option ID = 86735]
3. Most Vibrios [Option ID = 86733]
4. Mostly Vibrio parahemolyticus [Option ID = 86734]
Correct Answer :-
Most Vibrios [Option ID = 86733]
Howard Walter Florey and Ernst Boris Chain were given the Nobel Prize for the process development of: [Question ID = 51752]
52)
53)
54)
55)
56)
57)
58)
1. Monoclonal antibodies [Option ID = 87000]
2. Penicillin [Option ID = 87001]
3. Erythromycin [Option ID = 87002]
4. Glutamic acid [Option ID = 87003]
Correct Answer :-
Penicillin [Option ID = 87001]
A type of cell adhesion molecule that recognizes oligosaccharides exposed on the cell surface: [Question ID = 51710]
1. Exportins [Option ID = 86834]
2. Integrins [Option ID = 86835]
3. Laminins [Option ID = 86832]
4. Selectins [Option ID = 86833]
Correct Answer :-
Selectins [Option ID = 86833]
The method of post-transcriptional gene silencing is particularly useful in: [Question ID = 51753]
1. Animals [Option ID = 87004]
2. Microbes [Option ID = 87007]
3. Plants [Option ID = 87005]
4. Insects [Option ID = 87006]
Correct Answer :-
Plants [Option ID = 87005]
When B DNA is slightly dehydrated, it acquires: [Question ID = 51733]
1. Z conformation [Option ID = 86926]
2. Positive supercoils [Option ID = 86925]
3. A conformation [Option ID = 86927]
4. Negative supercoils [Option ID = 86924]
Correct Answer :-
A conformation [Option ID = 86927]
The Toll-like receptor (TLR) which is known to bind the lipopolysaccharide (LPS) of gram negative bacteria: [Question ID = 51677]
1. TLR-4 [Option ID = 86702]
2. TLR-2 [Option ID = 86701]
3. TLR-1 [Option ID = 86700]
4. TLR-10 [Option ID = 86703]
Correct Answer :-
TLR-4 [Option ID = 86702]
Which of the following skin disinfectant(s) is/are used frequently? [Question ID = 51703]
1. Isopropyl alcohol [Option ID = 86804]
2. Ethyl alcohol [Option ID = 86805]
3. Both of the above [Option ID = 86806]
4. None of the these [Option ID = 86807]
Correct Answer :-
Both of the above [Option ID = 86806]
Which of the following statements is not true? [Question ID = 51672]
1. Linkers are often used as cloning aids when making cDNA libraries [Option ID = 86682]
2. cDNA libraries made in lambda phage vectors are screened by colony hybridization. [Option ID = 86683]
3. To obtain single stranded DNA of a target sequence we clone the sequence into a phagemid [Option ID = 86681]
4. When cloning large genomic contigs into YACs we may get chimeric inserts [Option ID = 86680]
Correct Answer :-
cDNA libraries made in lambda phage vectors are screened by colony hybridization. [Option ID = 86683]
Which of the following has beads on a string structure? [Question ID = 51674]
59)
60)
61)
62)
63)
64)
65)
1. Chromatin [Option ID = 86689]
2. Chromosomes [Option ID = 86688]
3. Heterochromatin [Option ID = 86691]
4. Nucleosomes [Option ID = 86690]
Correct Answer :-
Nucleosomes [Option ID = 86690]
Which of the following is NOT a feature of eukaryotic gene expression? [Question ID = 51764]
1. Multiple copies of nuclear genes and pseudogenes can occur [Option ID = 87051]
2. RNA synthesis and protein synthesis are coupled [Option ID = 87050]
3. Many genes are interrupted by noncoding DNA sequences [Option ID = 87049]
4. Polycistronic mRNAs are very rare [Option ID = 87048]
Correct Answer :-
RNA synthesis and protein synthesis are coupled [Option ID = 87050]
Which of the following is the best explanation of lock and key theory of enzyme action? [Question ID = 51697]
1. Enzyme determines the direction of reaction [Option ID = 86780]
2. Enzyme interacts with substrate and lowers activation energy of the reaction [Option ID = 86783]
3. Enzyme speeds up reaction as it comes in contact with reactants [Option ID = 86781]
4. Compounds similar in structure to substrate inhibit enzyme activity [Option ID = 86782]
Correct Answer :-
Compounds similar in structure to substrate inhibit enzyme activity [Option ID = 86782]
Which of the following is not an A-B type of toxin? [Question ID = 51763]
1. Diphtheria toxin [Option ID = 87044]
2. Tetanus toxin [Option ID = 87046]
3. Pertussis toxin [Option ID = 87047]
4. Cholera toxin [Option ID = 87045]
Correct Answer :-
Tetanus toxin [Option ID = 87046]
Which of the following methods are used for enzyme immobilization? [Question ID = 51759]
1. All of the these [Option ID = 87031]
2. Covalent binding [Option ID = 87030]
3. Adsorption [Option ID = 87028]
4. Affinity binding [Option ID = 87029]
Correct Answer :-
All of the these [Option ID = 87031]
Which of the following is responsible for unusual resistance of bacterial spores to heat? [Question ID = 51766]
1. Polylysine [Option ID = 87056]
2. Dipicolinic acid [Option ID = 87057]
3. Mycolic acid [Option ID = 87058]
4. NAM-NAG [Option ID = 87059]
Correct Answer :-
Dipicolinic acid [Option ID = 87057]
Which of the following is not true of RNA synthesis (transcription)? [Question ID = 51739]
1. In transcription, U is inserted opposite T [Option ID = 86950]
2. RNA polymerase needs a primer to initiate transcription [Option ID = 86949]
3. New nucleotides are added on to the 3' OH of the ribose sugar [Option ID = 86951]
4. RNA synthesis is always in the 5' - 3' direction. [Option ID = 86948]
Correct Answer :-
RNA polymerase needs a primer to initiate transcription [Option ID = 86949]
Pathogen associated molecular patterns (PAMP) are detected by: [Question ID = 51722]
FirstRanker.com - FirstRanker's Choice
1)
2)
3)
4)
5)
6)
DU MSc Microbiology
Topic:- DU_J18_MSC_MICRO
Sanger?s method of sequencing is: [Question ID = 51724]
1. Sequencing by chain synthesis [Option ID = 86888]
2. Sequencing by chain cleavage [Option ID = 86890]
3. Sequencing by chain termination [Option ID = 86889]
4. Sequencing by chain ligation [Option ID = 86891]
Correct Answer :-
Sequencing by chain termination [Option ID = 86889]
What is the hydrogen ion concentration in moles/L, if pH of a solution is 3.0?
[Question ID = 51740]
1. 1 x 10
-3
[Option ID = 86954]
2. 4 x 10
-3
[Option ID = 86955]
3. 3 x 10
-3
[Option ID = 86953]
4. 3 [Option ID = 86952]
Correct Answer :-
1 x 10
-3
[Option ID = 86954]
A taxonomic system which takes into consideration a large number of phenotypic and genotypic characteristics of the organism is
called: [Question ID = 51757]
1. Numerical taxonomy [Option ID = 87021]
2. Molecular taxonomy [Option ID = 87022]
3. Phylogenetics [Option ID = 87020]
4. Phylogenomics [Option ID = 87023]
Correct Answer :-
Numerical taxonomy [Option ID = 87021]
The cytokine which is most commonly used for proliferation of bone marrow cells in vitro:
[Question ID = 51768]
1. TGF-? [Option ID = 87066]
2. GM-CSF [Option ID = 87064]
3. IFN-? [Option ID = 87065]
4. IL-2 [Option ID = 87067]
Correct Answer :-
GM-CSF [Option ID = 87064]
The interaction of two proteins within a cell can be visualized by:
[Question ID = 51689]
1. All of the above [Option ID = 86751]
2. Biomolecules with fluorescence complementation [Option ID = 86749]
3. Fluorescence recovery effectively transferred [Option ID = 86748]
4. Fluorescence resonance energy transfer [Option ID = 86750]
Correct Answer :-
Fluorescence resonance energy transfer [Option ID = 86750]
The arrangement in which flagella are distributed all around the bacterial cell is known as:
7)
8)
9)
10)
11)
[Question ID = 51727]
1. Amphitrichous [Option ID = 86901]
2. Peritrichous [Option ID = 86902]
3. Monotrichous [Option ID = 86903]
4. Lophotrichous [Option ID = 86900]
Correct Answer :-
Peritrichous [Option ID = 86902]
The dried female flowers of Humulus lupulus are used in the production of:
[Question ID = 51725]
1. Wine [Option ID = 86893]
2. Bread [Option ID = 86892]
3. Beer [Option ID = 86894]
4. Tofu [Option ID = 86895]
Correct Answer :-
Beer [Option ID = 86894]
The Swiss cheese ripening process is done using:
[Question ID = 51738]
1. Geotrichium candidum [Option ID = 86947]
2. Penicillium roqueforti [Option ID = 86945]
3. Penicillium camemberti [Option ID = 86944]
4. Propionibacterium sp. [Option ID = 86946]
Correct Answer :-
Propionibacterium sp. [Option ID = 86946]
The culture media containing heat labile constituents are best sterilized by:
[Question ID = 51687]
1. UV-irradiation [Option ID = 86743]
2. Filtration using membrane filter [Option ID = 86742]
3. Dry heat at 180
o
C for 30 min [Option ID = 86740]
4. Autoclaving at 15 psi for 30 min [Option ID = 86741]
Correct Answer :-
Filtration using membrane filter [Option ID = 86742]
The koji for miso is a culture of:
[Question ID = 51736]
1. Aspergillus oryzae [Option ID = 86937]
2. Aspergillus lentulus [Option ID = 86939]
3. Aspergillus flavus [Option ID = 86936]
4. Aspergillus fumigatus [Option ID = 86938]
Correct Answer :-
Aspergillus oryzae [Option ID = 86937]
Klinefelter syndrome is characterized by: [Question ID = 51712]
1. chromosome 19 trisomy [Option ID = 86841]
2. chromosome 21 monosomy [Option ID = 86843]
3. one or more extra X chromosomes [Option ID = 86840]
4. fragile X chromosome [Option ID = 86842]
Correct Answer :-
one or more extra X chromosomes [Option ID = 86840]
12)
13)
14)
15)
16)
17)
18)
Peptidoglycan is also known as: [Question ID = 51732]
1. N-acetyl glucosamine [Option ID = 86922]
2. N-acetyl muramic acid [Option ID = 86920]
3. Murein mucopeptide [Option ID = 86921]
4. Mesodiaminopimelic acid [Option ID = 86923]
Correct Answer :-
Murein mucopeptide [Option ID = 86921]
All of the following are sporicidal except: [Question ID = 51706]
1. Formaldehyde [Option ID = 86818]
2. Glutaraldehyde [Option ID = 86816]
3. Ethylene oxide [Option ID = 86817]
4. Alcohol [Option ID = 86819]
Correct Answer :-
Alcohol [Option ID = 86819]
The time required to kill 90% of the micro-organisms in a sample at a specific temperature is the [Question ID = 51698]
1. Decimal reduction time [Option ID = 86785]
2. Log reduction [Option ID = 86786]
3. Thermal inactivation constant [Option ID = 86787]
4. Thermal death point [Option ID = 86784]
Correct Answer :-
Decimal reduction time [Option ID = 86785]
The new antigens which appear on the tumors produced by irradiation are called: [Question ID = 51705]
1. Tumor-specific transplantation antigens (TSTA) [Option ID = 86813]
2. Carcino-embryonic antigens [Option ID = 86814]
3. Tumor associated antigens (TAA) [Option ID = 86812]
4. Tumor infiltrating antigens [Option ID = 86815]
Correct Answer :-
Tumor-specific transplantation antigens (TSTA) [Option ID = 86813]
Thermoduric bacteria are majorly found in:
[Question ID = 51729]
1. Pasteurized milk and dried milk [Option ID = 86909]
2. Ice-creams [Option ID = 86908]
3. None of the these [Option ID = 86911]
4. Vegetables [Option ID = 86910]
Correct Answer :-
Pasteurized milk and dried milk [Option ID = 86909]
The phenomenon in which the severity of symptoms in genetic disorders increases from generation to generation is called: [Question
ID = 51699]
1. Genetic drift [Option ID = 86788]
2. Genetic anticipation [Option ID = 86789]
3. Genetic polymorphism [Option ID = 86791]
4. Genetic erosion [Option ID = 86790]
Correct Answer :-
Genetic anticipation [Option ID = 86789]
Deviation in Hardy-Weinberg equilibrium in a population would be caused by [Question ID = 51720]
1. Small population size [Option ID = 86875]
2. Lack of mutation [Option ID = 86874]
3. Lack of selection [Option ID = 86873]
4. Random mating [Option ID = 86872]
19)
20)
21)
22)
23)
24)
25)
Correct Answer :-
Small population size [Option ID = 86875]
If the specific growth rate of the microorganism is 0.25 h-1, find out it?s doubling time? [Question ID = 51750]
1. 1.77 h [Option ID = 86992]
2. 2.77 h [Option ID = 86993]
3. 4.77 h [Option ID = 86995]
4. 3.77 h [Option ID = 86994]
Correct Answer :-
2.77 h [Option ID = 86993]
A polymerase that extends DNA chains in template-independent manner is: [Question ID = 51726]
1. Klenow [Option ID = 86897]
2. DNA pol I [Option ID = 86896]
3. Terminal deoxynucleotidyl transferase [Option ID = 86898]
4. Pfu DNA polymerase [Option ID = 86899]
Correct Answer :-
Terminal deoxynucleotidyl transferase [Option ID = 86898]
The Pathogenicity Islands (PAI) which are responsible for emergence of new pathogens are part of: [Question ID = 51696]
1. Integral part of integrons [Option ID = 86778]
2. Core genome of bacteria [Option ID = 86776]
3. Part of plasmids [Option ID = 86779]
4. Flexible genome pool of bacteria [Option ID = 86777]
Correct Answer :-
Core genome of bacteria [Option ID = 86776]
Universal primers used in Sanger?s sequencing of plasmid DNA are: [Question ID = 51769]
1. primers complementary to the vector sequences flanking the multiple cloning site [Option ID = 87071]
2. primers complementary to the antibiotic resistance gene of the vector [Option ID = 87069]
3. primers complementary to the multiple cloning sequence of the vector [Option ID = 87070]
4. primers of random sequence of length 18 nucleotides [Option ID = 87068]
Correct Answer :-
primers complementary to the vector sequences flanking the multiple cloning site [Option ID = 87071]
In 2011, which virus was declared by OIE to be eradicated from earth after successful culmination of global vaccination and
monitoring program for that virus?
[Question ID = 51700]
1. Rinderpest virus [Option ID = 86794]
2. Sheeppox virus [Option ID = 86793]
3. Smallpox virus [Option ID = 86792]
4. Peste-des-petits ruminants virus [Option ID = 86795]
Correct Answer :-
Rinderpest virus [Option ID = 86794]
In the latent state, Herpes simplex virus makes an 8.3 kilobase RNA transcript called: [Question ID = 51682]
1. LMT or latent membrane transcript [Option ID = 86722]
2. None of the above [Option ID = 86723]
3. LAT or latency associated transcript [Option ID = 86720]
4. LANA or latency associated nuclear antigen [Option ID = 86721]
Correct Answer :-
LAT or latency associated transcript [Option ID = 86720]
Variegation in four o?clock plants is an example of:
26)
27)
28)
29)
30)
31)
[Question ID = 51743]
1. Maternal effect [Option ID = 86964]
2. Nuclear inheritance [Option ID = 86966]
3. Organelle heredity [Option ID = 86965]
4. None of the these [Option ID = 86967]
Correct Answer :-
Organelle heredity [Option ID = 86965]
Tetracycline blocks protein synthesis by: [Question ID = 51762]
1. Inhibiting translocase enzyme [Option ID = 87043]
2. Inhibiting peptidyl transferase [Option ID = 87042]
3. Inhibiting binding of aminoacyl tRNA to ribosomes [Option ID = 87040]
4. Inhibiting initiation of translation [Option ID = 87041]
Correct Answer :-
Inhibiting binding of aminoacyl tRNA to ribosomes [Option ID = 87040]
Winogradsky column is often used for the isolation of:
[Question ID = 51734]
1. Escherichia spp. [Option ID = 86930]
2. Pyrolobus spp. [Option ID = 86931]
3. Desulfovibrio spp. [Option ID = 86928]
4. Sulfolobus spp. [Option ID = 86929]
Correct Answer :-
Desulfovibrio spp. [Option ID = 86928]
What are the end products of Entner-Doudoroff pathway? [Question ID = 51713]
1. Pyruvate [Option ID = 86846]
2. Acetaldehyde, pyruvate and CO2 [Option ID = 86847]
3. Acetaldehyde and pyruvate [Option ID = 86845]
4. Ethanol and pyruvate [Option ID = 86844]
Correct Answer :-
Ethanol and pyruvate [Option ID = 86844]
Flagella move the cell by: [Question ID = 51723]
1. An individual flagellum beating in a whip-like motion [Option ID = 86886]
2. Attaching to nearby particles and contracting [Option ID = 86885]
3. Spinning like a propeller [Option ID = 86884]
4. Many flagella beating in a synchronous whip-like motion [Option ID = 86887]
Correct Answer :-
Spinning like a propeller [Option ID = 86884]
Use of microbes for the break down or removal of toxic wastes in water and soil is called as: [Question ID = 51765]
1. Putrefaction [Option ID = 87053]
2. Recycling [Option ID = 87055]
3. Bioremediation [Option ID = 87054]
4. Decomposition [Option ID = 87052]
Correct Answer :-
Bioremediation [Option ID = 87054]
Leucine rich repeats (LRR) are an integral part of which immunological receptor? [Question ID = 51679]
1. Dendritic cell receptor [Option ID = 86710]
2. Toll-like receptor (TLR) [Option ID = 86708]
3. T cell receptor (TCR) [Option ID = 86711]
4. NK cell receptor [Option ID = 86709]
Correct Answer :-
32)
33)
34)
35)
36)
37)
38)
Toll-like receptor (TLR) [Option ID = 86708]
Chondroid of some bacteria are better known as:
[Question ID = 51755]
1. Bacterial plasmids [Option ID = 87014]
2. Bacterial plastids [Option ID = 87013]
3. Bacterial mitochondria [Option ID = 87015]
4. Mesosomes [Option ID = 87012]
Correct Answer :-
Mesosomes [Option ID = 87012]
A condition in which a single mutation causes multiple phenotypic effects is: [Question ID = 51675]
1. Multiphenotypy [Option ID = 86695]
2. Pleiotropy [Option ID = 86692]
3. Epigenesis [Option ID = 86694]
4. Epistasis [Option ID = 86693]
Correct Answer :-
Pleiotropy [Option ID = 86692]
The blood samples of athletes can be tested for the presence of certain performance enhancing drugs using: [Question ID = 51686]
1. Real time PCRs [Option ID = 86738]
2. Microarrays [Option ID = 86737]
3. Mass spectrometry [Option ID = 86736]
4. Fluorescence spectroscopy [Option ID = 86739]
Correct Answer :-
Mass spectrometry [Option ID = 86736]
Cork screw shaped forms of bacteria are [Question ID = 51721]
1. Stalked bacteria [Option ID = 86877]
2. Bacilli [Option ID = 86876]
3. Spirochaetes [Option ID = 86878]
4. Actinomycetes [Option ID = 86879]
Correct Answer :-
Spirochaetes [Option ID = 86878]
How many molecules of carbon dioxide are released after five rounds of Krebs cycle? [Question ID = 51719]
1. 18 [Option ID = 86871]
2. 12 [Option ID = 86870]
3. 10 [Option ID = 86869]
4. 6 [Option ID = 86868]
Correct Answer :-
10 [Option ID = 86869]
The atomizer is used in the following process: [Question ID = 51756]
1. Liquid-liquid extraction [Option ID = 87017]
2. None of the these [Option ID = 87019]
3. Cross flow filtration [Option ID = 87018]
4. Spray drying [Option ID = 87016]
Correct Answer :-
Spray drying [Option ID = 87016]
The process of nonreciprocal recombination by which one allele in a heterozygote is converted into the corresponding allele is called:
[Question ID = 51707]
1. Gene targeting [Option ID = 86820]
2. Gene knockout [Option ID = 86821]
39)
40)
41)
42)
43)
44)
3. Gene amplification [Option ID = 86823]
4. Gene conversion [Option ID = 86822]
Correct Answer :-
Gene conversion [Option ID = 86822]
The process of RNA inactivation by siRNAs is termed as: [Question ID = 51758]
1. RNA dysfunction [Option ID = 87027]
2. RNA silencing [Option ID = 87024]
3. RNA interference [Option ID = 87025]
4. Short RNA inactivation [Option ID = 87026]
Correct Answer :-
RNA interference [Option ID = 87025]
The production of high-fructose corn syrup (HFCS) from glucose involves which of the following enzymes? [Question ID = 51760]
1. Hexokinase [Option ID = 87035]
2. Invertase [Option ID = 87034]
3. Glucose isomerase [Option ID = 87032]
4. Glucose oxidase [Option ID = 87033]
Correct Answer :-
Glucose isomerase [Option ID = 87032]
This food-borne pathogen is very well known to grow even at refrigeration temperature:
[Question ID = 51691]
1. Salmonella enteritidis [Option ID = 86759]
2. Bacillus subtilis [Option ID = 86756]
3. Listeria monocytogenes [Option ID = 86757]
4. Vibrio cholerae [Option ID = 86758]
Correct Answer :-
Listeria monocytogenes [Option ID = 86757]
The term ecosystem was coined by: [Question ID = 51761]
1. Winogradsky [Option ID = 87036]
2. Pasteur [Option ID = 87039]
3. Flor [Option ID = 87038]
4. Tansley [Option ID = 87037]
Correct Answer :-
Tansley [Option ID = 87037]
In lactic acid fermentation the final electron acceptor is:
[Question ID = 51735]
1. Acetyl CoA [Option ID = 86934]
2. NAD
+
[Option ID = 86932]
3. Pyruvate [Option ID = 86933]
4. Glucose [Option ID = 86935]
Correct Answer :-
Pyruvate [Option ID = 86933]
Trickling filters are used in the following process [Question ID = 51770]
1. Waste water treatment [Option ID = 87072]
2. Protein recovery from biomass [Option ID = 87074]
3. Milk pasteurization [Option ID = 87073]
4. All of the these [Option ID = 87075]
Correct Answer :-
Waste water treatment [Option ID = 87072]
45)
46)
47)
48)
49)
50)
51)
The polio virus receptor which is an integral membrane protein is a member of immunoglobulin superfamily of proteins, and also is
involved in establishment of intercellular junctions between epithelial cells: [Question ID = 51688]
1. CD 55 [Option ID = 86744]
2. CD 51 [Option ID = 86746]
3. CD 15 [Option ID = 86747]
4. CD 155 [Option ID = 86745]
Correct Answer :-
CD 155 [Option ID = 86745]
Endotoxic shock produced by gram negative bacteremia is characterized by:
[Question ID = 51693]
1. Loss of large volumes of blood from host [Option ID = 86765]
2. Extensive internal haemorrhage in the organs of the host [Option ID = 86764]
3. Disseminated intravascular coagulation in the host [Option ID = 86766]
4. Release of minimal amount of cytokines in the host [Option ID = 86767]
Correct Answer :-
Disseminated intravascular coagulation in the host [Option ID = 86766]
Interferon free direct acting antivirals (DAAs) therapy has revolutionized treatment for which virus infection in recent years?
[Question ID = 51715]
1. Human papilloma virus [Option ID = 86855]
2. Hepatitis C virus [Option ID = 86854]
3. Chickenpox virus [Option ID = 86852]
4. Human Immunodeficiency virus [Option ID = 86853]
Correct Answer :-
Hepatitis C virus [Option ID = 86854]
A transmembrane protein that mediates the adhesion of cells to the extracellular matrix is: [Question ID = 51692]
1. Fibronectin [Option ID = 86761]
2. Laminin [Option ID = 86760]
3. Entactin [Option ID = 86763]
4. Integrin [Option ID = 86762]
Correct Answer :-
Integrin [Option ID = 86762]
Degranulation of most cells during hypersensitivity type I is known to produce: [Question ID = 51681]
1. Histamine, serotonin and leukotrienes [Option ID = 86718]
2. Histamine alone [Option ID = 86716]
3. Histamine, epinephrine and nor-epinephrine [Option ID = 86719]
4. Only Histamine and serotonin [Option ID = 86717]
Correct Answer :-
Histamine, serotonin and leukotrienes [Option ID = 86718]
Thiosulphate citrate bile salt sugar (TCBS) medium is used for selective isolation of:
[Question ID = 51685]
1. Non-cholera Vibrios only [Option ID = 86732]
2. Non-01 non-0139 Vibrio cholerae [Option ID = 86735]
3. Most Vibrios [Option ID = 86733]
4. Mostly Vibrio parahemolyticus [Option ID = 86734]
Correct Answer :-
Most Vibrios [Option ID = 86733]
Howard Walter Florey and Ernst Boris Chain were given the Nobel Prize for the process development of: [Question ID = 51752]
52)
53)
54)
55)
56)
57)
58)
1. Monoclonal antibodies [Option ID = 87000]
2. Penicillin [Option ID = 87001]
3. Erythromycin [Option ID = 87002]
4. Glutamic acid [Option ID = 87003]
Correct Answer :-
Penicillin [Option ID = 87001]
A type of cell adhesion molecule that recognizes oligosaccharides exposed on the cell surface: [Question ID = 51710]
1. Exportins [Option ID = 86834]
2. Integrins [Option ID = 86835]
3. Laminins [Option ID = 86832]
4. Selectins [Option ID = 86833]
Correct Answer :-
Selectins [Option ID = 86833]
The method of post-transcriptional gene silencing is particularly useful in: [Question ID = 51753]
1. Animals [Option ID = 87004]
2. Microbes [Option ID = 87007]
3. Plants [Option ID = 87005]
4. Insects [Option ID = 87006]
Correct Answer :-
Plants [Option ID = 87005]
When B DNA is slightly dehydrated, it acquires: [Question ID = 51733]
1. Z conformation [Option ID = 86926]
2. Positive supercoils [Option ID = 86925]
3. A conformation [Option ID = 86927]
4. Negative supercoils [Option ID = 86924]
Correct Answer :-
A conformation [Option ID = 86927]
The Toll-like receptor (TLR) which is known to bind the lipopolysaccharide (LPS) of gram negative bacteria: [Question ID = 51677]
1. TLR-4 [Option ID = 86702]
2. TLR-2 [Option ID = 86701]
3. TLR-1 [Option ID = 86700]
4. TLR-10 [Option ID = 86703]
Correct Answer :-
TLR-4 [Option ID = 86702]
Which of the following skin disinfectant(s) is/are used frequently? [Question ID = 51703]
1. Isopropyl alcohol [Option ID = 86804]
2. Ethyl alcohol [Option ID = 86805]
3. Both of the above [Option ID = 86806]
4. None of the these [Option ID = 86807]
Correct Answer :-
Both of the above [Option ID = 86806]
Which of the following statements is not true? [Question ID = 51672]
1. Linkers are often used as cloning aids when making cDNA libraries [Option ID = 86682]
2. cDNA libraries made in lambda phage vectors are screened by colony hybridization. [Option ID = 86683]
3. To obtain single stranded DNA of a target sequence we clone the sequence into a phagemid [Option ID = 86681]
4. When cloning large genomic contigs into YACs we may get chimeric inserts [Option ID = 86680]
Correct Answer :-
cDNA libraries made in lambda phage vectors are screened by colony hybridization. [Option ID = 86683]
Which of the following has beads on a string structure? [Question ID = 51674]
59)
60)
61)
62)
63)
64)
65)
1. Chromatin [Option ID = 86689]
2. Chromosomes [Option ID = 86688]
3. Heterochromatin [Option ID = 86691]
4. Nucleosomes [Option ID = 86690]
Correct Answer :-
Nucleosomes [Option ID = 86690]
Which of the following is NOT a feature of eukaryotic gene expression? [Question ID = 51764]
1. Multiple copies of nuclear genes and pseudogenes can occur [Option ID = 87051]
2. RNA synthesis and protein synthesis are coupled [Option ID = 87050]
3. Many genes are interrupted by noncoding DNA sequences [Option ID = 87049]
4. Polycistronic mRNAs are very rare [Option ID = 87048]
Correct Answer :-
RNA synthesis and protein synthesis are coupled [Option ID = 87050]
Which of the following is the best explanation of lock and key theory of enzyme action? [Question ID = 51697]
1. Enzyme determines the direction of reaction [Option ID = 86780]
2. Enzyme interacts with substrate and lowers activation energy of the reaction [Option ID = 86783]
3. Enzyme speeds up reaction as it comes in contact with reactants [Option ID = 86781]
4. Compounds similar in structure to substrate inhibit enzyme activity [Option ID = 86782]
Correct Answer :-
Compounds similar in structure to substrate inhibit enzyme activity [Option ID = 86782]
Which of the following is not an A-B type of toxin? [Question ID = 51763]
1. Diphtheria toxin [Option ID = 87044]
2. Tetanus toxin [Option ID = 87046]
3. Pertussis toxin [Option ID = 87047]
4. Cholera toxin [Option ID = 87045]
Correct Answer :-
Tetanus toxin [Option ID = 87046]
Which of the following methods are used for enzyme immobilization? [Question ID = 51759]
1. All of the these [Option ID = 87031]
2. Covalent binding [Option ID = 87030]
3. Adsorption [Option ID = 87028]
4. Affinity binding [Option ID = 87029]
Correct Answer :-
All of the these [Option ID = 87031]
Which of the following is responsible for unusual resistance of bacterial spores to heat? [Question ID = 51766]
1. Polylysine [Option ID = 87056]
2. Dipicolinic acid [Option ID = 87057]
3. Mycolic acid [Option ID = 87058]
4. NAM-NAG [Option ID = 87059]
Correct Answer :-
Dipicolinic acid [Option ID = 87057]
Which of the following is not true of RNA synthesis (transcription)? [Question ID = 51739]
1. In transcription, U is inserted opposite T [Option ID = 86950]
2. RNA polymerase needs a primer to initiate transcription [Option ID = 86949]
3. New nucleotides are added on to the 3' OH of the ribose sugar [Option ID = 86951]
4. RNA synthesis is always in the 5' - 3' direction. [Option ID = 86948]
Correct Answer :-
RNA polymerase needs a primer to initiate transcription [Option ID = 86949]
Pathogen associated molecular patterns (PAMP) are detected by: [Question ID = 51722]
66)
67)
68)
69)
70)
71)
1. B cell receptors [Option ID = 86882]
2. Non-leucine rich receptors [Option ID = 86883]
3. Toll-like receptors [Option ID = 86880]
4. T cell receptors [Option ID = 86881]
Correct Answer :-
Toll-like receptors [Option ID = 86880]
Examples of epimers are: [Question ID = 51714]
1. Both a and c [Option ID = 86851]
2. Glucose and galactose [Option ID = 86848]
3. Glucose and mannose [Option ID = 86850]
4. Glucose and fructose [Option ID = 86849]
Correct Answer :-
Both a and c [Option ID = 86851]
In 1961, Tim Loeb and Norton Zinder discovered these as the result of their search for phages whose replication depends on E. coli F-
pili which is used for bacterial conjugation
[Question ID = 51678]
1. Bacteriophage Lambda [Option ID = 86706]
2. Bacteriophage T7 [Option ID = 86705]
3. RNA coliphage [Option ID = 86704]
4. PhiX174 [Option ID = 86707]
Correct Answer :-
RNA coliphage [Option ID = 86704]
The most abundant type of RNA in the cells is: [Question ID = 51731]
1. rRNA [Option ID = 86916]
2. tRNA [Option ID = 86917]
3. mRNA [Option ID = 86918]
4. hnRNA [Option ID = 86919]
Correct Answer :-
rRNA [Option ID = 86916]
Expression of which of the early genes of Lambda phage leads to the replication of its DNA? [Question ID = 51676]
1. O and P [Option ID = 86696]
2. P and Q [Option ID = 86697]
3. O, P and Q [Option ID = 86699]
4. O and Q [Option ID = 86698]
Correct Answer :-
O and P [Option ID = 86696]
The 3, 5-Dinitrosalicylic acid is used for the estimation of: [Question ID = 51747]
1. Phenols [Option ID = 86983]
2. Amino acids [Option ID = 86981]
3. Starch [Option ID = 86980]
4. Reducing sugars [Option ID = 86982]
Correct Answer :-
Reducing sugars [Option ID = 86982]
You have isolated glucose oxidase which catalyses glucose oxidation and exhibits 50% V
max
at 0.05 M glucose. If you want to
increase the reaction rate to 90% then what concentration of glucose you should use in the reaction?
[Question ID = 51694]
1. 1M [Option ID = 86768]
2. 0.45 M [Option ID = 86769]
3. 0.30 M [Option ID = 86770]
FirstRanker.com - FirstRanker's Choice
1)
2)
3)
4)
5)
6)
DU MSc Microbiology
Topic:- DU_J18_MSC_MICRO
Sanger?s method of sequencing is: [Question ID = 51724]
1. Sequencing by chain synthesis [Option ID = 86888]
2. Sequencing by chain cleavage [Option ID = 86890]
3. Sequencing by chain termination [Option ID = 86889]
4. Sequencing by chain ligation [Option ID = 86891]
Correct Answer :-
Sequencing by chain termination [Option ID = 86889]
What is the hydrogen ion concentration in moles/L, if pH of a solution is 3.0?
[Question ID = 51740]
1. 1 x 10
-3
[Option ID = 86954]
2. 4 x 10
-3
[Option ID = 86955]
3. 3 x 10
-3
[Option ID = 86953]
4. 3 [Option ID = 86952]
Correct Answer :-
1 x 10
-3
[Option ID = 86954]
A taxonomic system which takes into consideration a large number of phenotypic and genotypic characteristics of the organism is
called: [Question ID = 51757]
1. Numerical taxonomy [Option ID = 87021]
2. Molecular taxonomy [Option ID = 87022]
3. Phylogenetics [Option ID = 87020]
4. Phylogenomics [Option ID = 87023]
Correct Answer :-
Numerical taxonomy [Option ID = 87021]
The cytokine which is most commonly used for proliferation of bone marrow cells in vitro:
[Question ID = 51768]
1. TGF-? [Option ID = 87066]
2. GM-CSF [Option ID = 87064]
3. IFN-? [Option ID = 87065]
4. IL-2 [Option ID = 87067]
Correct Answer :-
GM-CSF [Option ID = 87064]
The interaction of two proteins within a cell can be visualized by:
[Question ID = 51689]
1. All of the above [Option ID = 86751]
2. Biomolecules with fluorescence complementation [Option ID = 86749]
3. Fluorescence recovery effectively transferred [Option ID = 86748]
4. Fluorescence resonance energy transfer [Option ID = 86750]
Correct Answer :-
Fluorescence resonance energy transfer [Option ID = 86750]
The arrangement in which flagella are distributed all around the bacterial cell is known as:
7)
8)
9)
10)
11)
[Question ID = 51727]
1. Amphitrichous [Option ID = 86901]
2. Peritrichous [Option ID = 86902]
3. Monotrichous [Option ID = 86903]
4. Lophotrichous [Option ID = 86900]
Correct Answer :-
Peritrichous [Option ID = 86902]
The dried female flowers of Humulus lupulus are used in the production of:
[Question ID = 51725]
1. Wine [Option ID = 86893]
2. Bread [Option ID = 86892]
3. Beer [Option ID = 86894]
4. Tofu [Option ID = 86895]
Correct Answer :-
Beer [Option ID = 86894]
The Swiss cheese ripening process is done using:
[Question ID = 51738]
1. Geotrichium candidum [Option ID = 86947]
2. Penicillium roqueforti [Option ID = 86945]
3. Penicillium camemberti [Option ID = 86944]
4. Propionibacterium sp. [Option ID = 86946]
Correct Answer :-
Propionibacterium sp. [Option ID = 86946]
The culture media containing heat labile constituents are best sterilized by:
[Question ID = 51687]
1. UV-irradiation [Option ID = 86743]
2. Filtration using membrane filter [Option ID = 86742]
3. Dry heat at 180
o
C for 30 min [Option ID = 86740]
4. Autoclaving at 15 psi for 30 min [Option ID = 86741]
Correct Answer :-
Filtration using membrane filter [Option ID = 86742]
The koji for miso is a culture of:
[Question ID = 51736]
1. Aspergillus oryzae [Option ID = 86937]
2. Aspergillus lentulus [Option ID = 86939]
3. Aspergillus flavus [Option ID = 86936]
4. Aspergillus fumigatus [Option ID = 86938]
Correct Answer :-
Aspergillus oryzae [Option ID = 86937]
Klinefelter syndrome is characterized by: [Question ID = 51712]
1. chromosome 19 trisomy [Option ID = 86841]
2. chromosome 21 monosomy [Option ID = 86843]
3. one or more extra X chromosomes [Option ID = 86840]
4. fragile X chromosome [Option ID = 86842]
Correct Answer :-
one or more extra X chromosomes [Option ID = 86840]
12)
13)
14)
15)
16)
17)
18)
Peptidoglycan is also known as: [Question ID = 51732]
1. N-acetyl glucosamine [Option ID = 86922]
2. N-acetyl muramic acid [Option ID = 86920]
3. Murein mucopeptide [Option ID = 86921]
4. Mesodiaminopimelic acid [Option ID = 86923]
Correct Answer :-
Murein mucopeptide [Option ID = 86921]
All of the following are sporicidal except: [Question ID = 51706]
1. Formaldehyde [Option ID = 86818]
2. Glutaraldehyde [Option ID = 86816]
3. Ethylene oxide [Option ID = 86817]
4. Alcohol [Option ID = 86819]
Correct Answer :-
Alcohol [Option ID = 86819]
The time required to kill 90% of the micro-organisms in a sample at a specific temperature is the [Question ID = 51698]
1. Decimal reduction time [Option ID = 86785]
2. Log reduction [Option ID = 86786]
3. Thermal inactivation constant [Option ID = 86787]
4. Thermal death point [Option ID = 86784]
Correct Answer :-
Decimal reduction time [Option ID = 86785]
The new antigens which appear on the tumors produced by irradiation are called: [Question ID = 51705]
1. Tumor-specific transplantation antigens (TSTA) [Option ID = 86813]
2. Carcino-embryonic antigens [Option ID = 86814]
3. Tumor associated antigens (TAA) [Option ID = 86812]
4. Tumor infiltrating antigens [Option ID = 86815]
Correct Answer :-
Tumor-specific transplantation antigens (TSTA) [Option ID = 86813]
Thermoduric bacteria are majorly found in:
[Question ID = 51729]
1. Pasteurized milk and dried milk [Option ID = 86909]
2. Ice-creams [Option ID = 86908]
3. None of the these [Option ID = 86911]
4. Vegetables [Option ID = 86910]
Correct Answer :-
Pasteurized milk and dried milk [Option ID = 86909]
The phenomenon in which the severity of symptoms in genetic disorders increases from generation to generation is called: [Question
ID = 51699]
1. Genetic drift [Option ID = 86788]
2. Genetic anticipation [Option ID = 86789]
3. Genetic polymorphism [Option ID = 86791]
4. Genetic erosion [Option ID = 86790]
Correct Answer :-
Genetic anticipation [Option ID = 86789]
Deviation in Hardy-Weinberg equilibrium in a population would be caused by [Question ID = 51720]
1. Small population size [Option ID = 86875]
2. Lack of mutation [Option ID = 86874]
3. Lack of selection [Option ID = 86873]
4. Random mating [Option ID = 86872]
19)
20)
21)
22)
23)
24)
25)
Correct Answer :-
Small population size [Option ID = 86875]
If the specific growth rate of the microorganism is 0.25 h-1, find out it?s doubling time? [Question ID = 51750]
1. 1.77 h [Option ID = 86992]
2. 2.77 h [Option ID = 86993]
3. 4.77 h [Option ID = 86995]
4. 3.77 h [Option ID = 86994]
Correct Answer :-
2.77 h [Option ID = 86993]
A polymerase that extends DNA chains in template-independent manner is: [Question ID = 51726]
1. Klenow [Option ID = 86897]
2. DNA pol I [Option ID = 86896]
3. Terminal deoxynucleotidyl transferase [Option ID = 86898]
4. Pfu DNA polymerase [Option ID = 86899]
Correct Answer :-
Terminal deoxynucleotidyl transferase [Option ID = 86898]
The Pathogenicity Islands (PAI) which are responsible for emergence of new pathogens are part of: [Question ID = 51696]
1. Integral part of integrons [Option ID = 86778]
2. Core genome of bacteria [Option ID = 86776]
3. Part of plasmids [Option ID = 86779]
4. Flexible genome pool of bacteria [Option ID = 86777]
Correct Answer :-
Core genome of bacteria [Option ID = 86776]
Universal primers used in Sanger?s sequencing of plasmid DNA are: [Question ID = 51769]
1. primers complementary to the vector sequences flanking the multiple cloning site [Option ID = 87071]
2. primers complementary to the antibiotic resistance gene of the vector [Option ID = 87069]
3. primers complementary to the multiple cloning sequence of the vector [Option ID = 87070]
4. primers of random sequence of length 18 nucleotides [Option ID = 87068]
Correct Answer :-
primers complementary to the vector sequences flanking the multiple cloning site [Option ID = 87071]
In 2011, which virus was declared by OIE to be eradicated from earth after successful culmination of global vaccination and
monitoring program for that virus?
[Question ID = 51700]
1. Rinderpest virus [Option ID = 86794]
2. Sheeppox virus [Option ID = 86793]
3. Smallpox virus [Option ID = 86792]
4. Peste-des-petits ruminants virus [Option ID = 86795]
Correct Answer :-
Rinderpest virus [Option ID = 86794]
In the latent state, Herpes simplex virus makes an 8.3 kilobase RNA transcript called: [Question ID = 51682]
1. LMT or latent membrane transcript [Option ID = 86722]
2. None of the above [Option ID = 86723]
3. LAT or latency associated transcript [Option ID = 86720]
4. LANA or latency associated nuclear antigen [Option ID = 86721]
Correct Answer :-
LAT or latency associated transcript [Option ID = 86720]
Variegation in four o?clock plants is an example of:
26)
27)
28)
29)
30)
31)
[Question ID = 51743]
1. Maternal effect [Option ID = 86964]
2. Nuclear inheritance [Option ID = 86966]
3. Organelle heredity [Option ID = 86965]
4. None of the these [Option ID = 86967]
Correct Answer :-
Organelle heredity [Option ID = 86965]
Tetracycline blocks protein synthesis by: [Question ID = 51762]
1. Inhibiting translocase enzyme [Option ID = 87043]
2. Inhibiting peptidyl transferase [Option ID = 87042]
3. Inhibiting binding of aminoacyl tRNA to ribosomes [Option ID = 87040]
4. Inhibiting initiation of translation [Option ID = 87041]
Correct Answer :-
Inhibiting binding of aminoacyl tRNA to ribosomes [Option ID = 87040]
Winogradsky column is often used for the isolation of:
[Question ID = 51734]
1. Escherichia spp. [Option ID = 86930]
2. Pyrolobus spp. [Option ID = 86931]
3. Desulfovibrio spp. [Option ID = 86928]
4. Sulfolobus spp. [Option ID = 86929]
Correct Answer :-
Desulfovibrio spp. [Option ID = 86928]
What are the end products of Entner-Doudoroff pathway? [Question ID = 51713]
1. Pyruvate [Option ID = 86846]
2. Acetaldehyde, pyruvate and CO2 [Option ID = 86847]
3. Acetaldehyde and pyruvate [Option ID = 86845]
4. Ethanol and pyruvate [Option ID = 86844]
Correct Answer :-
Ethanol and pyruvate [Option ID = 86844]
Flagella move the cell by: [Question ID = 51723]
1. An individual flagellum beating in a whip-like motion [Option ID = 86886]
2. Attaching to nearby particles and contracting [Option ID = 86885]
3. Spinning like a propeller [Option ID = 86884]
4. Many flagella beating in a synchronous whip-like motion [Option ID = 86887]
Correct Answer :-
Spinning like a propeller [Option ID = 86884]
Use of microbes for the break down or removal of toxic wastes in water and soil is called as: [Question ID = 51765]
1. Putrefaction [Option ID = 87053]
2. Recycling [Option ID = 87055]
3. Bioremediation [Option ID = 87054]
4. Decomposition [Option ID = 87052]
Correct Answer :-
Bioremediation [Option ID = 87054]
Leucine rich repeats (LRR) are an integral part of which immunological receptor? [Question ID = 51679]
1. Dendritic cell receptor [Option ID = 86710]
2. Toll-like receptor (TLR) [Option ID = 86708]
3. T cell receptor (TCR) [Option ID = 86711]
4. NK cell receptor [Option ID = 86709]
Correct Answer :-
32)
33)
34)
35)
36)
37)
38)
Toll-like receptor (TLR) [Option ID = 86708]
Chondroid of some bacteria are better known as:
[Question ID = 51755]
1. Bacterial plasmids [Option ID = 87014]
2. Bacterial plastids [Option ID = 87013]
3. Bacterial mitochondria [Option ID = 87015]
4. Mesosomes [Option ID = 87012]
Correct Answer :-
Mesosomes [Option ID = 87012]
A condition in which a single mutation causes multiple phenotypic effects is: [Question ID = 51675]
1. Multiphenotypy [Option ID = 86695]
2. Pleiotropy [Option ID = 86692]
3. Epigenesis [Option ID = 86694]
4. Epistasis [Option ID = 86693]
Correct Answer :-
Pleiotropy [Option ID = 86692]
The blood samples of athletes can be tested for the presence of certain performance enhancing drugs using: [Question ID = 51686]
1. Real time PCRs [Option ID = 86738]
2. Microarrays [Option ID = 86737]
3. Mass spectrometry [Option ID = 86736]
4. Fluorescence spectroscopy [Option ID = 86739]
Correct Answer :-
Mass spectrometry [Option ID = 86736]
Cork screw shaped forms of bacteria are [Question ID = 51721]
1. Stalked bacteria [Option ID = 86877]
2. Bacilli [Option ID = 86876]
3. Spirochaetes [Option ID = 86878]
4. Actinomycetes [Option ID = 86879]
Correct Answer :-
Spirochaetes [Option ID = 86878]
How many molecules of carbon dioxide are released after five rounds of Krebs cycle? [Question ID = 51719]
1. 18 [Option ID = 86871]
2. 12 [Option ID = 86870]
3. 10 [Option ID = 86869]
4. 6 [Option ID = 86868]
Correct Answer :-
10 [Option ID = 86869]
The atomizer is used in the following process: [Question ID = 51756]
1. Liquid-liquid extraction [Option ID = 87017]
2. None of the these [Option ID = 87019]
3. Cross flow filtration [Option ID = 87018]
4. Spray drying [Option ID = 87016]
Correct Answer :-
Spray drying [Option ID = 87016]
The process of nonreciprocal recombination by which one allele in a heterozygote is converted into the corresponding allele is called:
[Question ID = 51707]
1. Gene targeting [Option ID = 86820]
2. Gene knockout [Option ID = 86821]
39)
40)
41)
42)
43)
44)
3. Gene amplification [Option ID = 86823]
4. Gene conversion [Option ID = 86822]
Correct Answer :-
Gene conversion [Option ID = 86822]
The process of RNA inactivation by siRNAs is termed as: [Question ID = 51758]
1. RNA dysfunction [Option ID = 87027]
2. RNA silencing [Option ID = 87024]
3. RNA interference [Option ID = 87025]
4. Short RNA inactivation [Option ID = 87026]
Correct Answer :-
RNA interference [Option ID = 87025]
The production of high-fructose corn syrup (HFCS) from glucose involves which of the following enzymes? [Question ID = 51760]
1. Hexokinase [Option ID = 87035]
2. Invertase [Option ID = 87034]
3. Glucose isomerase [Option ID = 87032]
4. Glucose oxidase [Option ID = 87033]
Correct Answer :-
Glucose isomerase [Option ID = 87032]
This food-borne pathogen is very well known to grow even at refrigeration temperature:
[Question ID = 51691]
1. Salmonella enteritidis [Option ID = 86759]
2. Bacillus subtilis [Option ID = 86756]
3. Listeria monocytogenes [Option ID = 86757]
4. Vibrio cholerae [Option ID = 86758]
Correct Answer :-
Listeria monocytogenes [Option ID = 86757]
The term ecosystem was coined by: [Question ID = 51761]
1. Winogradsky [Option ID = 87036]
2. Pasteur [Option ID = 87039]
3. Flor [Option ID = 87038]
4. Tansley [Option ID = 87037]
Correct Answer :-
Tansley [Option ID = 87037]
In lactic acid fermentation the final electron acceptor is:
[Question ID = 51735]
1. Acetyl CoA [Option ID = 86934]
2. NAD
+
[Option ID = 86932]
3. Pyruvate [Option ID = 86933]
4. Glucose [Option ID = 86935]
Correct Answer :-
Pyruvate [Option ID = 86933]
Trickling filters are used in the following process [Question ID = 51770]
1. Waste water treatment [Option ID = 87072]
2. Protein recovery from biomass [Option ID = 87074]
3. Milk pasteurization [Option ID = 87073]
4. All of the these [Option ID = 87075]
Correct Answer :-
Waste water treatment [Option ID = 87072]
45)
46)
47)
48)
49)
50)
51)
The polio virus receptor which is an integral membrane protein is a member of immunoglobulin superfamily of proteins, and also is
involved in establishment of intercellular junctions between epithelial cells: [Question ID = 51688]
1. CD 55 [Option ID = 86744]
2. CD 51 [Option ID = 86746]
3. CD 15 [Option ID = 86747]
4. CD 155 [Option ID = 86745]
Correct Answer :-
CD 155 [Option ID = 86745]
Endotoxic shock produced by gram negative bacteremia is characterized by:
[Question ID = 51693]
1. Loss of large volumes of blood from host [Option ID = 86765]
2. Extensive internal haemorrhage in the organs of the host [Option ID = 86764]
3. Disseminated intravascular coagulation in the host [Option ID = 86766]
4. Release of minimal amount of cytokines in the host [Option ID = 86767]
Correct Answer :-
Disseminated intravascular coagulation in the host [Option ID = 86766]
Interferon free direct acting antivirals (DAAs) therapy has revolutionized treatment for which virus infection in recent years?
[Question ID = 51715]
1. Human papilloma virus [Option ID = 86855]
2. Hepatitis C virus [Option ID = 86854]
3. Chickenpox virus [Option ID = 86852]
4. Human Immunodeficiency virus [Option ID = 86853]
Correct Answer :-
Hepatitis C virus [Option ID = 86854]
A transmembrane protein that mediates the adhesion of cells to the extracellular matrix is: [Question ID = 51692]
1. Fibronectin [Option ID = 86761]
2. Laminin [Option ID = 86760]
3. Entactin [Option ID = 86763]
4. Integrin [Option ID = 86762]
Correct Answer :-
Integrin [Option ID = 86762]
Degranulation of most cells during hypersensitivity type I is known to produce: [Question ID = 51681]
1. Histamine, serotonin and leukotrienes [Option ID = 86718]
2. Histamine alone [Option ID = 86716]
3. Histamine, epinephrine and nor-epinephrine [Option ID = 86719]
4. Only Histamine and serotonin [Option ID = 86717]
Correct Answer :-
Histamine, serotonin and leukotrienes [Option ID = 86718]
Thiosulphate citrate bile salt sugar (TCBS) medium is used for selective isolation of:
[Question ID = 51685]
1. Non-cholera Vibrios only [Option ID = 86732]
2. Non-01 non-0139 Vibrio cholerae [Option ID = 86735]
3. Most Vibrios [Option ID = 86733]
4. Mostly Vibrio parahemolyticus [Option ID = 86734]
Correct Answer :-
Most Vibrios [Option ID = 86733]
Howard Walter Florey and Ernst Boris Chain were given the Nobel Prize for the process development of: [Question ID = 51752]
52)
53)
54)
55)
56)
57)
58)
1. Monoclonal antibodies [Option ID = 87000]
2. Penicillin [Option ID = 87001]
3. Erythromycin [Option ID = 87002]
4. Glutamic acid [Option ID = 87003]
Correct Answer :-
Penicillin [Option ID = 87001]
A type of cell adhesion molecule that recognizes oligosaccharides exposed on the cell surface: [Question ID = 51710]
1. Exportins [Option ID = 86834]
2. Integrins [Option ID = 86835]
3. Laminins [Option ID = 86832]
4. Selectins [Option ID = 86833]
Correct Answer :-
Selectins [Option ID = 86833]
The method of post-transcriptional gene silencing is particularly useful in: [Question ID = 51753]
1. Animals [Option ID = 87004]
2. Microbes [Option ID = 87007]
3. Plants [Option ID = 87005]
4. Insects [Option ID = 87006]
Correct Answer :-
Plants [Option ID = 87005]
When B DNA is slightly dehydrated, it acquires: [Question ID = 51733]
1. Z conformation [Option ID = 86926]
2. Positive supercoils [Option ID = 86925]
3. A conformation [Option ID = 86927]
4. Negative supercoils [Option ID = 86924]
Correct Answer :-
A conformation [Option ID = 86927]
The Toll-like receptor (TLR) which is known to bind the lipopolysaccharide (LPS) of gram negative bacteria: [Question ID = 51677]
1. TLR-4 [Option ID = 86702]
2. TLR-2 [Option ID = 86701]
3. TLR-1 [Option ID = 86700]
4. TLR-10 [Option ID = 86703]
Correct Answer :-
TLR-4 [Option ID = 86702]
Which of the following skin disinfectant(s) is/are used frequently? [Question ID = 51703]
1. Isopropyl alcohol [Option ID = 86804]
2. Ethyl alcohol [Option ID = 86805]
3. Both of the above [Option ID = 86806]
4. None of the these [Option ID = 86807]
Correct Answer :-
Both of the above [Option ID = 86806]
Which of the following statements is not true? [Question ID = 51672]
1. Linkers are often used as cloning aids when making cDNA libraries [Option ID = 86682]
2. cDNA libraries made in lambda phage vectors are screened by colony hybridization. [Option ID = 86683]
3. To obtain single stranded DNA of a target sequence we clone the sequence into a phagemid [Option ID = 86681]
4. When cloning large genomic contigs into YACs we may get chimeric inserts [Option ID = 86680]
Correct Answer :-
cDNA libraries made in lambda phage vectors are screened by colony hybridization. [Option ID = 86683]
Which of the following has beads on a string structure? [Question ID = 51674]
59)
60)
61)
62)
63)
64)
65)
1. Chromatin [Option ID = 86689]
2. Chromosomes [Option ID = 86688]
3. Heterochromatin [Option ID = 86691]
4. Nucleosomes [Option ID = 86690]
Correct Answer :-
Nucleosomes [Option ID = 86690]
Which of the following is NOT a feature of eukaryotic gene expression? [Question ID = 51764]
1. Multiple copies of nuclear genes and pseudogenes can occur [Option ID = 87051]
2. RNA synthesis and protein synthesis are coupled [Option ID = 87050]
3. Many genes are interrupted by noncoding DNA sequences [Option ID = 87049]
4. Polycistronic mRNAs are very rare [Option ID = 87048]
Correct Answer :-
RNA synthesis and protein synthesis are coupled [Option ID = 87050]
Which of the following is the best explanation of lock and key theory of enzyme action? [Question ID = 51697]
1. Enzyme determines the direction of reaction [Option ID = 86780]
2. Enzyme interacts with substrate and lowers activation energy of the reaction [Option ID = 86783]
3. Enzyme speeds up reaction as it comes in contact with reactants [Option ID = 86781]
4. Compounds similar in structure to substrate inhibit enzyme activity [Option ID = 86782]
Correct Answer :-
Compounds similar in structure to substrate inhibit enzyme activity [Option ID = 86782]
Which of the following is not an A-B type of toxin? [Question ID = 51763]
1. Diphtheria toxin [Option ID = 87044]
2. Tetanus toxin [Option ID = 87046]
3. Pertussis toxin [Option ID = 87047]
4. Cholera toxin [Option ID = 87045]
Correct Answer :-
Tetanus toxin [Option ID = 87046]
Which of the following methods are used for enzyme immobilization? [Question ID = 51759]
1. All of the these [Option ID = 87031]
2. Covalent binding [Option ID = 87030]
3. Adsorption [Option ID = 87028]
4. Affinity binding [Option ID = 87029]
Correct Answer :-
All of the these [Option ID = 87031]
Which of the following is responsible for unusual resistance of bacterial spores to heat? [Question ID = 51766]
1. Polylysine [Option ID = 87056]
2. Dipicolinic acid [Option ID = 87057]
3. Mycolic acid [Option ID = 87058]
4. NAM-NAG [Option ID = 87059]
Correct Answer :-
Dipicolinic acid [Option ID = 87057]
Which of the following is not true of RNA synthesis (transcription)? [Question ID = 51739]
1. In transcription, U is inserted opposite T [Option ID = 86950]
2. RNA polymerase needs a primer to initiate transcription [Option ID = 86949]
3. New nucleotides are added on to the 3' OH of the ribose sugar [Option ID = 86951]
4. RNA synthesis is always in the 5' - 3' direction. [Option ID = 86948]
Correct Answer :-
RNA polymerase needs a primer to initiate transcription [Option ID = 86949]
Pathogen associated molecular patterns (PAMP) are detected by: [Question ID = 51722]
66)
67)
68)
69)
70)
71)
1. B cell receptors [Option ID = 86882]
2. Non-leucine rich receptors [Option ID = 86883]
3. Toll-like receptors [Option ID = 86880]
4. T cell receptors [Option ID = 86881]
Correct Answer :-
Toll-like receptors [Option ID = 86880]
Examples of epimers are: [Question ID = 51714]
1. Both a and c [Option ID = 86851]
2. Glucose and galactose [Option ID = 86848]
3. Glucose and mannose [Option ID = 86850]
4. Glucose and fructose [Option ID = 86849]
Correct Answer :-
Both a and c [Option ID = 86851]
In 1961, Tim Loeb and Norton Zinder discovered these as the result of their search for phages whose replication depends on E. coli F-
pili which is used for bacterial conjugation
[Question ID = 51678]
1. Bacteriophage Lambda [Option ID = 86706]
2. Bacteriophage T7 [Option ID = 86705]
3. RNA coliphage [Option ID = 86704]
4. PhiX174 [Option ID = 86707]
Correct Answer :-
RNA coliphage [Option ID = 86704]
The most abundant type of RNA in the cells is: [Question ID = 51731]
1. rRNA [Option ID = 86916]
2. tRNA [Option ID = 86917]
3. mRNA [Option ID = 86918]
4. hnRNA [Option ID = 86919]
Correct Answer :-
rRNA [Option ID = 86916]
Expression of which of the early genes of Lambda phage leads to the replication of its DNA? [Question ID = 51676]
1. O and P [Option ID = 86696]
2. P and Q [Option ID = 86697]
3. O, P and Q [Option ID = 86699]
4. O and Q [Option ID = 86698]
Correct Answer :-
O and P [Option ID = 86696]
The 3, 5-Dinitrosalicylic acid is used for the estimation of: [Question ID = 51747]
1. Phenols [Option ID = 86983]
2. Amino acids [Option ID = 86981]
3. Starch [Option ID = 86980]
4. Reducing sugars [Option ID = 86982]
Correct Answer :-
Reducing sugars [Option ID = 86982]
You have isolated glucose oxidase which catalyses glucose oxidation and exhibits 50% V
max
at 0.05 M glucose. If you want to
increase the reaction rate to 90% then what concentration of glucose you should use in the reaction?
[Question ID = 51694]
1. 1M [Option ID = 86768]
2. 0.45 M [Option ID = 86769]
3. 0.30 M [Option ID = 86770]
72)
73)
74)
75)
76)
77)
4. 0.40 M [Option ID = 86771]
Correct Answer :-
0.45 M [Option ID = 86769]
Which of the following is not used in the pulping process of paper making? [Question ID = 51767]
1. Kraft process [Option ID = 87060]
2. Chlorite treatment [Option ID = 87063]
3. Bioleaching process [Option ID = 87062]
4. Sulfite process [Option ID = 87061]
Correct Answer :-
Bioleaching process [Option ID = 87062]
Which among these kinds of viruses do not exist? [Question ID = 51702]
1. Helical non-enveloped plant viruses [Option ID = 86800]
2. Helical enveloped animal viruses [Option ID = 86803]
3. Helical non-enveloped animal viruses [Option ID = 86802]
4. Icosahedral plant viruses [Option ID = 86801]
Correct Answer :-
Helical non-enveloped animal viruses [Option ID = 86802]
Which one is not a subviral agent? [Question ID = 51684]
1. Viroid [Option ID = 86728]
2. Virusoid [Option ID = 86730]
3. Prion [Option ID = 86731]
4. Mimivirus [Option ID = 86729]
Correct Answer :-
Mimivirus [Option ID = 86729]
Ames Test uses Salmonella typhimurium mutants to screen chemical agents that might be carcinogenic. The rationale behind this test
is:
[Question ID = 51746]
1. DNA repair in bacteria is inefficient [Option ID = 86979]
2. most carcinogenic agents are mutagenic [Option ID = 86977]
3. the rate of spontaneous mutations in bacteria is much higher than in eukaryotes [Option ID = 86978]
4. mutations in bacteria result in auxotrophy [Option ID = 86976]
Correct Answer :-
most carcinogenic agents are mutagenic [Option ID = 86977]
Brandy is a distilled form of: [Question ID = 51730]
1. Wine [Option ID = 86915]
2. Whisky [Option ID = 86913]
3. Beer [Option ID = 86912]
4. Vodka [Option ID = 86914]
Correct Answer :-
Wine [Option ID = 86915]
A CSTR process where only feed rate is used to control the specific growth rate is called:
[Question ID = 51745]
1. Turbidostat [Option ID = 86974]
2. DOstat [Option ID = 86975]
3. Retentostat [Option ID = 86973]
4. Chemostat [Option ID = 86972]
Correct Answer :-
Chemostat [Option ID = 86972]
FirstRanker.com - FirstRanker's Choice
1)
2)
3)
4)
5)
6)
DU MSc Microbiology
Topic:- DU_J18_MSC_MICRO
Sanger?s method of sequencing is: [Question ID = 51724]
1. Sequencing by chain synthesis [Option ID = 86888]
2. Sequencing by chain cleavage [Option ID = 86890]
3. Sequencing by chain termination [Option ID = 86889]
4. Sequencing by chain ligation [Option ID = 86891]
Correct Answer :-
Sequencing by chain termination [Option ID = 86889]
What is the hydrogen ion concentration in moles/L, if pH of a solution is 3.0?
[Question ID = 51740]
1. 1 x 10
-3
[Option ID = 86954]
2. 4 x 10
-3
[Option ID = 86955]
3. 3 x 10
-3
[Option ID = 86953]
4. 3 [Option ID = 86952]
Correct Answer :-
1 x 10
-3
[Option ID = 86954]
A taxonomic system which takes into consideration a large number of phenotypic and genotypic characteristics of the organism is
called: [Question ID = 51757]
1. Numerical taxonomy [Option ID = 87021]
2. Molecular taxonomy [Option ID = 87022]
3. Phylogenetics [Option ID = 87020]
4. Phylogenomics [Option ID = 87023]
Correct Answer :-
Numerical taxonomy [Option ID = 87021]
The cytokine which is most commonly used for proliferation of bone marrow cells in vitro:
[Question ID = 51768]
1. TGF-? [Option ID = 87066]
2. GM-CSF [Option ID = 87064]
3. IFN-? [Option ID = 87065]
4. IL-2 [Option ID = 87067]
Correct Answer :-
GM-CSF [Option ID = 87064]
The interaction of two proteins within a cell can be visualized by:
[Question ID = 51689]
1. All of the above [Option ID = 86751]
2. Biomolecules with fluorescence complementation [Option ID = 86749]
3. Fluorescence recovery effectively transferred [Option ID = 86748]
4. Fluorescence resonance energy transfer [Option ID = 86750]
Correct Answer :-
Fluorescence resonance energy transfer [Option ID = 86750]
The arrangement in which flagella are distributed all around the bacterial cell is known as:
7)
8)
9)
10)
11)
[Question ID = 51727]
1. Amphitrichous [Option ID = 86901]
2. Peritrichous [Option ID = 86902]
3. Monotrichous [Option ID = 86903]
4. Lophotrichous [Option ID = 86900]
Correct Answer :-
Peritrichous [Option ID = 86902]
The dried female flowers of Humulus lupulus are used in the production of:
[Question ID = 51725]
1. Wine [Option ID = 86893]
2. Bread [Option ID = 86892]
3. Beer [Option ID = 86894]
4. Tofu [Option ID = 86895]
Correct Answer :-
Beer [Option ID = 86894]
The Swiss cheese ripening process is done using:
[Question ID = 51738]
1. Geotrichium candidum [Option ID = 86947]
2. Penicillium roqueforti [Option ID = 86945]
3. Penicillium camemberti [Option ID = 86944]
4. Propionibacterium sp. [Option ID = 86946]
Correct Answer :-
Propionibacterium sp. [Option ID = 86946]
The culture media containing heat labile constituents are best sterilized by:
[Question ID = 51687]
1. UV-irradiation [Option ID = 86743]
2. Filtration using membrane filter [Option ID = 86742]
3. Dry heat at 180
o
C for 30 min [Option ID = 86740]
4. Autoclaving at 15 psi for 30 min [Option ID = 86741]
Correct Answer :-
Filtration using membrane filter [Option ID = 86742]
The koji for miso is a culture of:
[Question ID = 51736]
1. Aspergillus oryzae [Option ID = 86937]
2. Aspergillus lentulus [Option ID = 86939]
3. Aspergillus flavus [Option ID = 86936]
4. Aspergillus fumigatus [Option ID = 86938]
Correct Answer :-
Aspergillus oryzae [Option ID = 86937]
Klinefelter syndrome is characterized by: [Question ID = 51712]
1. chromosome 19 trisomy [Option ID = 86841]
2. chromosome 21 monosomy [Option ID = 86843]
3. one or more extra X chromosomes [Option ID = 86840]
4. fragile X chromosome [Option ID = 86842]
Correct Answer :-
one or more extra X chromosomes [Option ID = 86840]
12)
13)
14)
15)
16)
17)
18)
Peptidoglycan is also known as: [Question ID = 51732]
1. N-acetyl glucosamine [Option ID = 86922]
2. N-acetyl muramic acid [Option ID = 86920]
3. Murein mucopeptide [Option ID = 86921]
4. Mesodiaminopimelic acid [Option ID = 86923]
Correct Answer :-
Murein mucopeptide [Option ID = 86921]
All of the following are sporicidal except: [Question ID = 51706]
1. Formaldehyde [Option ID = 86818]
2. Glutaraldehyde [Option ID = 86816]
3. Ethylene oxide [Option ID = 86817]
4. Alcohol [Option ID = 86819]
Correct Answer :-
Alcohol [Option ID = 86819]
The time required to kill 90% of the micro-organisms in a sample at a specific temperature is the [Question ID = 51698]
1. Decimal reduction time [Option ID = 86785]
2. Log reduction [Option ID = 86786]
3. Thermal inactivation constant [Option ID = 86787]
4. Thermal death point [Option ID = 86784]
Correct Answer :-
Decimal reduction time [Option ID = 86785]
The new antigens which appear on the tumors produced by irradiation are called: [Question ID = 51705]
1. Tumor-specific transplantation antigens (TSTA) [Option ID = 86813]
2. Carcino-embryonic antigens [Option ID = 86814]
3. Tumor associated antigens (TAA) [Option ID = 86812]
4. Tumor infiltrating antigens [Option ID = 86815]
Correct Answer :-
Tumor-specific transplantation antigens (TSTA) [Option ID = 86813]
Thermoduric bacteria are majorly found in:
[Question ID = 51729]
1. Pasteurized milk and dried milk [Option ID = 86909]
2. Ice-creams [Option ID = 86908]
3. None of the these [Option ID = 86911]
4. Vegetables [Option ID = 86910]
Correct Answer :-
Pasteurized milk and dried milk [Option ID = 86909]
The phenomenon in which the severity of symptoms in genetic disorders increases from generation to generation is called: [Question
ID = 51699]
1. Genetic drift [Option ID = 86788]
2. Genetic anticipation [Option ID = 86789]
3. Genetic polymorphism [Option ID = 86791]
4. Genetic erosion [Option ID = 86790]
Correct Answer :-
Genetic anticipation [Option ID = 86789]
Deviation in Hardy-Weinberg equilibrium in a population would be caused by [Question ID = 51720]
1. Small population size [Option ID = 86875]
2. Lack of mutation [Option ID = 86874]
3. Lack of selection [Option ID = 86873]
4. Random mating [Option ID = 86872]
19)
20)
21)
22)
23)
24)
25)
Correct Answer :-
Small population size [Option ID = 86875]
If the specific growth rate of the microorganism is 0.25 h-1, find out it?s doubling time? [Question ID = 51750]
1. 1.77 h [Option ID = 86992]
2. 2.77 h [Option ID = 86993]
3. 4.77 h [Option ID = 86995]
4. 3.77 h [Option ID = 86994]
Correct Answer :-
2.77 h [Option ID = 86993]
A polymerase that extends DNA chains in template-independent manner is: [Question ID = 51726]
1. Klenow [Option ID = 86897]
2. DNA pol I [Option ID = 86896]
3. Terminal deoxynucleotidyl transferase [Option ID = 86898]
4. Pfu DNA polymerase [Option ID = 86899]
Correct Answer :-
Terminal deoxynucleotidyl transferase [Option ID = 86898]
The Pathogenicity Islands (PAI) which are responsible for emergence of new pathogens are part of: [Question ID = 51696]
1. Integral part of integrons [Option ID = 86778]
2. Core genome of bacteria [Option ID = 86776]
3. Part of plasmids [Option ID = 86779]
4. Flexible genome pool of bacteria [Option ID = 86777]
Correct Answer :-
Core genome of bacteria [Option ID = 86776]
Universal primers used in Sanger?s sequencing of plasmid DNA are: [Question ID = 51769]
1. primers complementary to the vector sequences flanking the multiple cloning site [Option ID = 87071]
2. primers complementary to the antibiotic resistance gene of the vector [Option ID = 87069]
3. primers complementary to the multiple cloning sequence of the vector [Option ID = 87070]
4. primers of random sequence of length 18 nucleotides [Option ID = 87068]
Correct Answer :-
primers complementary to the vector sequences flanking the multiple cloning site [Option ID = 87071]
In 2011, which virus was declared by OIE to be eradicated from earth after successful culmination of global vaccination and
monitoring program for that virus?
[Question ID = 51700]
1. Rinderpest virus [Option ID = 86794]
2. Sheeppox virus [Option ID = 86793]
3. Smallpox virus [Option ID = 86792]
4. Peste-des-petits ruminants virus [Option ID = 86795]
Correct Answer :-
Rinderpest virus [Option ID = 86794]
In the latent state, Herpes simplex virus makes an 8.3 kilobase RNA transcript called: [Question ID = 51682]
1. LMT or latent membrane transcript [Option ID = 86722]
2. None of the above [Option ID = 86723]
3. LAT or latency associated transcript [Option ID = 86720]
4. LANA or latency associated nuclear antigen [Option ID = 86721]
Correct Answer :-
LAT or latency associated transcript [Option ID = 86720]
Variegation in four o?clock plants is an example of:
26)
27)
28)
29)
30)
31)
[Question ID = 51743]
1. Maternal effect [Option ID = 86964]
2. Nuclear inheritance [Option ID = 86966]
3. Organelle heredity [Option ID = 86965]
4. None of the these [Option ID = 86967]
Correct Answer :-
Organelle heredity [Option ID = 86965]
Tetracycline blocks protein synthesis by: [Question ID = 51762]
1. Inhibiting translocase enzyme [Option ID = 87043]
2. Inhibiting peptidyl transferase [Option ID = 87042]
3. Inhibiting binding of aminoacyl tRNA to ribosomes [Option ID = 87040]
4. Inhibiting initiation of translation [Option ID = 87041]
Correct Answer :-
Inhibiting binding of aminoacyl tRNA to ribosomes [Option ID = 87040]
Winogradsky column is often used for the isolation of:
[Question ID = 51734]
1. Escherichia spp. [Option ID = 86930]
2. Pyrolobus spp. [Option ID = 86931]
3. Desulfovibrio spp. [Option ID = 86928]
4. Sulfolobus spp. [Option ID = 86929]
Correct Answer :-
Desulfovibrio spp. [Option ID = 86928]
What are the end products of Entner-Doudoroff pathway? [Question ID = 51713]
1. Pyruvate [Option ID = 86846]
2. Acetaldehyde, pyruvate and CO2 [Option ID = 86847]
3. Acetaldehyde and pyruvate [Option ID = 86845]
4. Ethanol and pyruvate [Option ID = 86844]
Correct Answer :-
Ethanol and pyruvate [Option ID = 86844]
Flagella move the cell by: [Question ID = 51723]
1. An individual flagellum beating in a whip-like motion [Option ID = 86886]
2. Attaching to nearby particles and contracting [Option ID = 86885]
3. Spinning like a propeller [Option ID = 86884]
4. Many flagella beating in a synchronous whip-like motion [Option ID = 86887]
Correct Answer :-
Spinning like a propeller [Option ID = 86884]
Use of microbes for the break down or removal of toxic wastes in water and soil is called as: [Question ID = 51765]
1. Putrefaction [Option ID = 87053]
2. Recycling [Option ID = 87055]
3. Bioremediation [Option ID = 87054]
4. Decomposition [Option ID = 87052]
Correct Answer :-
Bioremediation [Option ID = 87054]
Leucine rich repeats (LRR) are an integral part of which immunological receptor? [Question ID = 51679]
1. Dendritic cell receptor [Option ID = 86710]
2. Toll-like receptor (TLR) [Option ID = 86708]
3. T cell receptor (TCR) [Option ID = 86711]
4. NK cell receptor [Option ID = 86709]
Correct Answer :-
32)
33)
34)
35)
36)
37)
38)
Toll-like receptor (TLR) [Option ID = 86708]
Chondroid of some bacteria are better known as:
[Question ID = 51755]
1. Bacterial plasmids [Option ID = 87014]
2. Bacterial plastids [Option ID = 87013]
3. Bacterial mitochondria [Option ID = 87015]
4. Mesosomes [Option ID = 87012]
Correct Answer :-
Mesosomes [Option ID = 87012]
A condition in which a single mutation causes multiple phenotypic effects is: [Question ID = 51675]
1. Multiphenotypy [Option ID = 86695]
2. Pleiotropy [Option ID = 86692]
3. Epigenesis [Option ID = 86694]
4. Epistasis [Option ID = 86693]
Correct Answer :-
Pleiotropy [Option ID = 86692]
The blood samples of athletes can be tested for the presence of certain performance enhancing drugs using: [Question ID = 51686]
1. Real time PCRs [Option ID = 86738]
2. Microarrays [Option ID = 86737]
3. Mass spectrometry [Option ID = 86736]
4. Fluorescence spectroscopy [Option ID = 86739]
Correct Answer :-
Mass spectrometry [Option ID = 86736]
Cork screw shaped forms of bacteria are [Question ID = 51721]
1. Stalked bacteria [Option ID = 86877]
2. Bacilli [Option ID = 86876]
3. Spirochaetes [Option ID = 86878]
4. Actinomycetes [Option ID = 86879]
Correct Answer :-
Spirochaetes [Option ID = 86878]
How many molecules of carbon dioxide are released after five rounds of Krebs cycle? [Question ID = 51719]
1. 18 [Option ID = 86871]
2. 12 [Option ID = 86870]
3. 10 [Option ID = 86869]
4. 6 [Option ID = 86868]
Correct Answer :-
10 [Option ID = 86869]
The atomizer is used in the following process: [Question ID = 51756]
1. Liquid-liquid extraction [Option ID = 87017]
2. None of the these [Option ID = 87019]
3. Cross flow filtration [Option ID = 87018]
4. Spray drying [Option ID = 87016]
Correct Answer :-
Spray drying [Option ID = 87016]
The process of nonreciprocal recombination by which one allele in a heterozygote is converted into the corresponding allele is called:
[Question ID = 51707]
1. Gene targeting [Option ID = 86820]
2. Gene knockout [Option ID = 86821]
39)
40)
41)
42)
43)
44)
3. Gene amplification [Option ID = 86823]
4. Gene conversion [Option ID = 86822]
Correct Answer :-
Gene conversion [Option ID = 86822]
The process of RNA inactivation by siRNAs is termed as: [Question ID = 51758]
1. RNA dysfunction [Option ID = 87027]
2. RNA silencing [Option ID = 87024]
3. RNA interference [Option ID = 87025]
4. Short RNA inactivation [Option ID = 87026]
Correct Answer :-
RNA interference [Option ID = 87025]
The production of high-fructose corn syrup (HFCS) from glucose involves which of the following enzymes? [Question ID = 51760]
1. Hexokinase [Option ID = 87035]
2. Invertase [Option ID = 87034]
3. Glucose isomerase [Option ID = 87032]
4. Glucose oxidase [Option ID = 87033]
Correct Answer :-
Glucose isomerase [Option ID = 87032]
This food-borne pathogen is very well known to grow even at refrigeration temperature:
[Question ID = 51691]
1. Salmonella enteritidis [Option ID = 86759]
2. Bacillus subtilis [Option ID = 86756]
3. Listeria monocytogenes [Option ID = 86757]
4. Vibrio cholerae [Option ID = 86758]
Correct Answer :-
Listeria monocytogenes [Option ID = 86757]
The term ecosystem was coined by: [Question ID = 51761]
1. Winogradsky [Option ID = 87036]
2. Pasteur [Option ID = 87039]
3. Flor [Option ID = 87038]
4. Tansley [Option ID = 87037]
Correct Answer :-
Tansley [Option ID = 87037]
In lactic acid fermentation the final electron acceptor is:
[Question ID = 51735]
1. Acetyl CoA [Option ID = 86934]
2. NAD
+
[Option ID = 86932]
3. Pyruvate [Option ID = 86933]
4. Glucose [Option ID = 86935]
Correct Answer :-
Pyruvate [Option ID = 86933]
Trickling filters are used in the following process [Question ID = 51770]
1. Waste water treatment [Option ID = 87072]
2. Protein recovery from biomass [Option ID = 87074]
3. Milk pasteurization [Option ID = 87073]
4. All of the these [Option ID = 87075]
Correct Answer :-
Waste water treatment [Option ID = 87072]
45)
46)
47)
48)
49)
50)
51)
The polio virus receptor which is an integral membrane protein is a member of immunoglobulin superfamily of proteins, and also is
involved in establishment of intercellular junctions between epithelial cells: [Question ID = 51688]
1. CD 55 [Option ID = 86744]
2. CD 51 [Option ID = 86746]
3. CD 15 [Option ID = 86747]
4. CD 155 [Option ID = 86745]
Correct Answer :-
CD 155 [Option ID = 86745]
Endotoxic shock produced by gram negative bacteremia is characterized by:
[Question ID = 51693]
1. Loss of large volumes of blood from host [Option ID = 86765]
2. Extensive internal haemorrhage in the organs of the host [Option ID = 86764]
3. Disseminated intravascular coagulation in the host [Option ID = 86766]
4. Release of minimal amount of cytokines in the host [Option ID = 86767]
Correct Answer :-
Disseminated intravascular coagulation in the host [Option ID = 86766]
Interferon free direct acting antivirals (DAAs) therapy has revolutionized treatment for which virus infection in recent years?
[Question ID = 51715]
1. Human papilloma virus [Option ID = 86855]
2. Hepatitis C virus [Option ID = 86854]
3. Chickenpox virus [Option ID = 86852]
4. Human Immunodeficiency virus [Option ID = 86853]
Correct Answer :-
Hepatitis C virus [Option ID = 86854]
A transmembrane protein that mediates the adhesion of cells to the extracellular matrix is: [Question ID = 51692]
1. Fibronectin [Option ID = 86761]
2. Laminin [Option ID = 86760]
3. Entactin [Option ID = 86763]
4. Integrin [Option ID = 86762]
Correct Answer :-
Integrin [Option ID = 86762]
Degranulation of most cells during hypersensitivity type I is known to produce: [Question ID = 51681]
1. Histamine, serotonin and leukotrienes [Option ID = 86718]
2. Histamine alone [Option ID = 86716]
3. Histamine, epinephrine and nor-epinephrine [Option ID = 86719]
4. Only Histamine and serotonin [Option ID = 86717]
Correct Answer :-
Histamine, serotonin and leukotrienes [Option ID = 86718]
Thiosulphate citrate bile salt sugar (TCBS) medium is used for selective isolation of:
[Question ID = 51685]
1. Non-cholera Vibrios only [Option ID = 86732]
2. Non-01 non-0139 Vibrio cholerae [Option ID = 86735]
3. Most Vibrios [Option ID = 86733]
4. Mostly Vibrio parahemolyticus [Option ID = 86734]
Correct Answer :-
Most Vibrios [Option ID = 86733]
Howard Walter Florey and Ernst Boris Chain were given the Nobel Prize for the process development of: [Question ID = 51752]
52)
53)
54)
55)
56)
57)
58)
1. Monoclonal antibodies [Option ID = 87000]
2. Penicillin [Option ID = 87001]
3. Erythromycin [Option ID = 87002]
4. Glutamic acid [Option ID = 87003]
Correct Answer :-
Penicillin [Option ID = 87001]
A type of cell adhesion molecule that recognizes oligosaccharides exposed on the cell surface: [Question ID = 51710]
1. Exportins [Option ID = 86834]
2. Integrins [Option ID = 86835]
3. Laminins [Option ID = 86832]
4. Selectins [Option ID = 86833]
Correct Answer :-
Selectins [Option ID = 86833]
The method of post-transcriptional gene silencing is particularly useful in: [Question ID = 51753]
1. Animals [Option ID = 87004]
2. Microbes [Option ID = 87007]
3. Plants [Option ID = 87005]
4. Insects [Option ID = 87006]
Correct Answer :-
Plants [Option ID = 87005]
When B DNA is slightly dehydrated, it acquires: [Question ID = 51733]
1. Z conformation [Option ID = 86926]
2. Positive supercoils [Option ID = 86925]
3. A conformation [Option ID = 86927]
4. Negative supercoils [Option ID = 86924]
Correct Answer :-
A conformation [Option ID = 86927]
The Toll-like receptor (TLR) which is known to bind the lipopolysaccharide (LPS) of gram negative bacteria: [Question ID = 51677]
1. TLR-4 [Option ID = 86702]
2. TLR-2 [Option ID = 86701]
3. TLR-1 [Option ID = 86700]
4. TLR-10 [Option ID = 86703]
Correct Answer :-
TLR-4 [Option ID = 86702]
Which of the following skin disinfectant(s) is/are used frequently? [Question ID = 51703]
1. Isopropyl alcohol [Option ID = 86804]
2. Ethyl alcohol [Option ID = 86805]
3. Both of the above [Option ID = 86806]
4. None of the these [Option ID = 86807]
Correct Answer :-
Both of the above [Option ID = 86806]
Which of the following statements is not true? [Question ID = 51672]
1. Linkers are often used as cloning aids when making cDNA libraries [Option ID = 86682]
2. cDNA libraries made in lambda phage vectors are screened by colony hybridization. [Option ID = 86683]
3. To obtain single stranded DNA of a target sequence we clone the sequence into a phagemid [Option ID = 86681]
4. When cloning large genomic contigs into YACs we may get chimeric inserts [Option ID = 86680]
Correct Answer :-
cDNA libraries made in lambda phage vectors are screened by colony hybridization. [Option ID = 86683]
Which of the following has beads on a string structure? [Question ID = 51674]
59)
60)
61)
62)
63)
64)
65)
1. Chromatin [Option ID = 86689]
2. Chromosomes [Option ID = 86688]
3. Heterochromatin [Option ID = 86691]
4. Nucleosomes [Option ID = 86690]
Correct Answer :-
Nucleosomes [Option ID = 86690]
Which of the following is NOT a feature of eukaryotic gene expression? [Question ID = 51764]
1. Multiple copies of nuclear genes and pseudogenes can occur [Option ID = 87051]
2. RNA synthesis and protein synthesis are coupled [Option ID = 87050]
3. Many genes are interrupted by noncoding DNA sequences [Option ID = 87049]
4. Polycistronic mRNAs are very rare [Option ID = 87048]
Correct Answer :-
RNA synthesis and protein synthesis are coupled [Option ID = 87050]
Which of the following is the best explanation of lock and key theory of enzyme action? [Question ID = 51697]
1. Enzyme determines the direction of reaction [Option ID = 86780]
2. Enzyme interacts with substrate and lowers activation energy of the reaction [Option ID = 86783]
3. Enzyme speeds up reaction as it comes in contact with reactants [Option ID = 86781]
4. Compounds similar in structure to substrate inhibit enzyme activity [Option ID = 86782]
Correct Answer :-
Compounds similar in structure to substrate inhibit enzyme activity [Option ID = 86782]
Which of the following is not an A-B type of toxin? [Question ID = 51763]
1. Diphtheria toxin [Option ID = 87044]
2. Tetanus toxin [Option ID = 87046]
3. Pertussis toxin [Option ID = 87047]
4. Cholera toxin [Option ID = 87045]
Correct Answer :-
Tetanus toxin [Option ID = 87046]
Which of the following methods are used for enzyme immobilization? [Question ID = 51759]
1. All of the these [Option ID = 87031]
2. Covalent binding [Option ID = 87030]
3. Adsorption [Option ID = 87028]
4. Affinity binding [Option ID = 87029]
Correct Answer :-
All of the these [Option ID = 87031]
Which of the following is responsible for unusual resistance of bacterial spores to heat? [Question ID = 51766]
1. Polylysine [Option ID = 87056]
2. Dipicolinic acid [Option ID = 87057]
3. Mycolic acid [Option ID = 87058]
4. NAM-NAG [Option ID = 87059]
Correct Answer :-
Dipicolinic acid [Option ID = 87057]
Which of the following is not true of RNA synthesis (transcription)? [Question ID = 51739]
1. In transcription, U is inserted opposite T [Option ID = 86950]
2. RNA polymerase needs a primer to initiate transcription [Option ID = 86949]
3. New nucleotides are added on to the 3' OH of the ribose sugar [Option ID = 86951]
4. RNA synthesis is always in the 5' - 3' direction. [Option ID = 86948]
Correct Answer :-
RNA polymerase needs a primer to initiate transcription [Option ID = 86949]
Pathogen associated molecular patterns (PAMP) are detected by: [Question ID = 51722]
66)
67)
68)
69)
70)
71)
1. B cell receptors [Option ID = 86882]
2. Non-leucine rich receptors [Option ID = 86883]
3. Toll-like receptors [Option ID = 86880]
4. T cell receptors [Option ID = 86881]
Correct Answer :-
Toll-like receptors [Option ID = 86880]
Examples of epimers are: [Question ID = 51714]
1. Both a and c [Option ID = 86851]
2. Glucose and galactose [Option ID = 86848]
3. Glucose and mannose [Option ID = 86850]
4. Glucose and fructose [Option ID = 86849]
Correct Answer :-
Both a and c [Option ID = 86851]
In 1961, Tim Loeb and Norton Zinder discovered these as the result of their search for phages whose replication depends on E. coli F-
pili which is used for bacterial conjugation
[Question ID = 51678]
1. Bacteriophage Lambda [Option ID = 86706]
2. Bacteriophage T7 [Option ID = 86705]
3. RNA coliphage [Option ID = 86704]
4. PhiX174 [Option ID = 86707]
Correct Answer :-
RNA coliphage [Option ID = 86704]
The most abundant type of RNA in the cells is: [Question ID = 51731]
1. rRNA [Option ID = 86916]
2. tRNA [Option ID = 86917]
3. mRNA [Option ID = 86918]
4. hnRNA [Option ID = 86919]
Correct Answer :-
rRNA [Option ID = 86916]
Expression of which of the early genes of Lambda phage leads to the replication of its DNA? [Question ID = 51676]
1. O and P [Option ID = 86696]
2. P and Q [Option ID = 86697]
3. O, P and Q [Option ID = 86699]
4. O and Q [Option ID = 86698]
Correct Answer :-
O and P [Option ID = 86696]
The 3, 5-Dinitrosalicylic acid is used for the estimation of: [Question ID = 51747]
1. Phenols [Option ID = 86983]
2. Amino acids [Option ID = 86981]
3. Starch [Option ID = 86980]
4. Reducing sugars [Option ID = 86982]
Correct Answer :-
Reducing sugars [Option ID = 86982]
You have isolated glucose oxidase which catalyses glucose oxidation and exhibits 50% V
max
at 0.05 M glucose. If you want to
increase the reaction rate to 90% then what concentration of glucose you should use in the reaction?
[Question ID = 51694]
1. 1M [Option ID = 86768]
2. 0.45 M [Option ID = 86769]
3. 0.30 M [Option ID = 86770]
72)
73)
74)
75)
76)
77)
4. 0.40 M [Option ID = 86771]
Correct Answer :-
0.45 M [Option ID = 86769]
Which of the following is not used in the pulping process of paper making? [Question ID = 51767]
1. Kraft process [Option ID = 87060]
2. Chlorite treatment [Option ID = 87063]
3. Bioleaching process [Option ID = 87062]
4. Sulfite process [Option ID = 87061]
Correct Answer :-
Bioleaching process [Option ID = 87062]
Which among these kinds of viruses do not exist? [Question ID = 51702]
1. Helical non-enveloped plant viruses [Option ID = 86800]
2. Helical enveloped animal viruses [Option ID = 86803]
3. Helical non-enveloped animal viruses [Option ID = 86802]
4. Icosahedral plant viruses [Option ID = 86801]
Correct Answer :-
Helical non-enveloped animal viruses [Option ID = 86802]
Which one is not a subviral agent? [Question ID = 51684]
1. Viroid [Option ID = 86728]
2. Virusoid [Option ID = 86730]
3. Prion [Option ID = 86731]
4. Mimivirus [Option ID = 86729]
Correct Answer :-
Mimivirus [Option ID = 86729]
Ames Test uses Salmonella typhimurium mutants to screen chemical agents that might be carcinogenic. The rationale behind this test
is:
[Question ID = 51746]
1. DNA repair in bacteria is inefficient [Option ID = 86979]
2. most carcinogenic agents are mutagenic [Option ID = 86977]
3. the rate of spontaneous mutations in bacteria is much higher than in eukaryotes [Option ID = 86978]
4. mutations in bacteria result in auxotrophy [Option ID = 86976]
Correct Answer :-
most carcinogenic agents are mutagenic [Option ID = 86977]
Brandy is a distilled form of: [Question ID = 51730]
1. Wine [Option ID = 86915]
2. Whisky [Option ID = 86913]
3. Beer [Option ID = 86912]
4. Vodka [Option ID = 86914]
Correct Answer :-
Wine [Option ID = 86915]
A CSTR process where only feed rate is used to control the specific growth rate is called:
[Question ID = 51745]
1. Turbidostat [Option ID = 86974]
2. DOstat [Option ID = 86975]
3. Retentostat [Option ID = 86973]
4. Chemostat [Option ID = 86972]
Correct Answer :-
Chemostat [Option ID = 86972]
78)
79)
80)
81)
82)
83)
84)
An automated machine which is used for rapid (90 minutes) identification of Mycobacterium tuberculosis in the clinical sample:
[Question ID = 51711]
1. Gene Expert [Option ID = 86837]
2. BATAC [Option ID = 86836]
3. Vitek-2 [Option ID = 86838]
4. Microscan by Siemens [Option ID = 86839]
Correct Answer :-
Gene Expert [Option ID = 86837]
An antimicrobial agent which was a very common constituent of several toiletries but has recently been banned:
[Question ID = 51695]
1. Hexachlorophene [Option ID = 86773]
2. Ketoconazole [Option ID = 86775]
3. Iodine [Option ID = 86772]
4. Triclosan [Option ID = 86774]
Correct Answer :-
Triclosan [Option ID = 86774]
An autosomal dominant disorder caused due to the expansion of trinucleotide repeats is [Question ID = 51680]
1. Klinefelter syndrome [Option ID = 86713]
2. Huntington disease [Option ID = 86712]
3. Alzheimer disease [Option ID = 86715]
4. Creutzfeldt-Jakob disease [Option ID = 86714]
Correct Answer :-
Huntington disease [Option ID = 86712]
Type II modification methylases methylate DNA at: [Question ID = 51683]
1. Cytosine and guanine [Option ID = 86727]
2. Adenine and thymine [Option ID = 86726]
3. Cytosine and adenine [Option ID = 86725]
4. Adenine and guanine [Option ID = 86724]
Correct Answer :-
Cytosine and adenine [Option ID = 86725]
The nucleotides in RNA are joined by: [Question ID = 51718]
1. 3?-5? phosphodiester bond [Option ID = 86864]
2. 3?-3? phosphodiester bond [Option ID = 86866]
3. 5?-3? phosphodiester bond [Option ID = 86865]
4. 5?-5? phosphodiester bond [Option ID = 86867]
Correct Answer :-
3?-5? phosphodiester bond [Option ID = 86864]
In prokaryotes, the first amino acid in the polypeptide chain is: [Question ID = 51741]
1. Can be any amino acid [Option ID = 86959]
2. N-methyl methionine [Option ID = 86957]
3. Methionine [Option ID = 86956]
4. N-formyl methionine [Option ID = 86958]
Correct Answer :-
N-formyl methionine [Option ID = 86958]
You were asked to electrophorese a sample of hyper-immune serum using agarose gel electrophoresis at pH-8.6. Which would be the
fastest moving fraction? [Question ID = 51701]
1. Fibrinogen [Option ID = 86799]
FirstRanker.com - FirstRanker's Choice
1)
2)
3)
4)
5)
6)
DU MSc Microbiology
Topic:- DU_J18_MSC_MICRO
Sanger?s method of sequencing is: [Question ID = 51724]
1. Sequencing by chain synthesis [Option ID = 86888]
2. Sequencing by chain cleavage [Option ID = 86890]
3. Sequencing by chain termination [Option ID = 86889]
4. Sequencing by chain ligation [Option ID = 86891]
Correct Answer :-
Sequencing by chain termination [Option ID = 86889]
What is the hydrogen ion concentration in moles/L, if pH of a solution is 3.0?
[Question ID = 51740]
1. 1 x 10
-3
[Option ID = 86954]
2. 4 x 10
-3
[Option ID = 86955]
3. 3 x 10
-3
[Option ID = 86953]
4. 3 [Option ID = 86952]
Correct Answer :-
1 x 10
-3
[Option ID = 86954]
A taxonomic system which takes into consideration a large number of phenotypic and genotypic characteristics of the organism is
called: [Question ID = 51757]
1. Numerical taxonomy [Option ID = 87021]
2. Molecular taxonomy [Option ID = 87022]
3. Phylogenetics [Option ID = 87020]
4. Phylogenomics [Option ID = 87023]
Correct Answer :-
Numerical taxonomy [Option ID = 87021]
The cytokine which is most commonly used for proliferation of bone marrow cells in vitro:
[Question ID = 51768]
1. TGF-? [Option ID = 87066]
2. GM-CSF [Option ID = 87064]
3. IFN-? [Option ID = 87065]
4. IL-2 [Option ID = 87067]
Correct Answer :-
GM-CSF [Option ID = 87064]
The interaction of two proteins within a cell can be visualized by:
[Question ID = 51689]
1. All of the above [Option ID = 86751]
2. Biomolecules with fluorescence complementation [Option ID = 86749]
3. Fluorescence recovery effectively transferred [Option ID = 86748]
4. Fluorescence resonance energy transfer [Option ID = 86750]
Correct Answer :-
Fluorescence resonance energy transfer [Option ID = 86750]
The arrangement in which flagella are distributed all around the bacterial cell is known as:
7)
8)
9)
10)
11)
[Question ID = 51727]
1. Amphitrichous [Option ID = 86901]
2. Peritrichous [Option ID = 86902]
3. Monotrichous [Option ID = 86903]
4. Lophotrichous [Option ID = 86900]
Correct Answer :-
Peritrichous [Option ID = 86902]
The dried female flowers of Humulus lupulus are used in the production of:
[Question ID = 51725]
1. Wine [Option ID = 86893]
2. Bread [Option ID = 86892]
3. Beer [Option ID = 86894]
4. Tofu [Option ID = 86895]
Correct Answer :-
Beer [Option ID = 86894]
The Swiss cheese ripening process is done using:
[Question ID = 51738]
1. Geotrichium candidum [Option ID = 86947]
2. Penicillium roqueforti [Option ID = 86945]
3. Penicillium camemberti [Option ID = 86944]
4. Propionibacterium sp. [Option ID = 86946]
Correct Answer :-
Propionibacterium sp. [Option ID = 86946]
The culture media containing heat labile constituents are best sterilized by:
[Question ID = 51687]
1. UV-irradiation [Option ID = 86743]
2. Filtration using membrane filter [Option ID = 86742]
3. Dry heat at 180
o
C for 30 min [Option ID = 86740]
4. Autoclaving at 15 psi for 30 min [Option ID = 86741]
Correct Answer :-
Filtration using membrane filter [Option ID = 86742]
The koji for miso is a culture of:
[Question ID = 51736]
1. Aspergillus oryzae [Option ID = 86937]
2. Aspergillus lentulus [Option ID = 86939]
3. Aspergillus flavus [Option ID = 86936]
4. Aspergillus fumigatus [Option ID = 86938]
Correct Answer :-
Aspergillus oryzae [Option ID = 86937]
Klinefelter syndrome is characterized by: [Question ID = 51712]
1. chromosome 19 trisomy [Option ID = 86841]
2. chromosome 21 monosomy [Option ID = 86843]
3. one or more extra X chromosomes [Option ID = 86840]
4. fragile X chromosome [Option ID = 86842]
Correct Answer :-
one or more extra X chromosomes [Option ID = 86840]
12)
13)
14)
15)
16)
17)
18)
Peptidoglycan is also known as: [Question ID = 51732]
1. N-acetyl glucosamine [Option ID = 86922]
2. N-acetyl muramic acid [Option ID = 86920]
3. Murein mucopeptide [Option ID = 86921]
4. Mesodiaminopimelic acid [Option ID = 86923]
Correct Answer :-
Murein mucopeptide [Option ID = 86921]
All of the following are sporicidal except: [Question ID = 51706]
1. Formaldehyde [Option ID = 86818]
2. Glutaraldehyde [Option ID = 86816]
3. Ethylene oxide [Option ID = 86817]
4. Alcohol [Option ID = 86819]
Correct Answer :-
Alcohol [Option ID = 86819]
The time required to kill 90% of the micro-organisms in a sample at a specific temperature is the [Question ID = 51698]
1. Decimal reduction time [Option ID = 86785]
2. Log reduction [Option ID = 86786]
3. Thermal inactivation constant [Option ID = 86787]
4. Thermal death point [Option ID = 86784]
Correct Answer :-
Decimal reduction time [Option ID = 86785]
The new antigens which appear on the tumors produced by irradiation are called: [Question ID = 51705]
1. Tumor-specific transplantation antigens (TSTA) [Option ID = 86813]
2. Carcino-embryonic antigens [Option ID = 86814]
3. Tumor associated antigens (TAA) [Option ID = 86812]
4. Tumor infiltrating antigens [Option ID = 86815]
Correct Answer :-
Tumor-specific transplantation antigens (TSTA) [Option ID = 86813]
Thermoduric bacteria are majorly found in:
[Question ID = 51729]
1. Pasteurized milk and dried milk [Option ID = 86909]
2. Ice-creams [Option ID = 86908]
3. None of the these [Option ID = 86911]
4. Vegetables [Option ID = 86910]
Correct Answer :-
Pasteurized milk and dried milk [Option ID = 86909]
The phenomenon in which the severity of symptoms in genetic disorders increases from generation to generation is called: [Question
ID = 51699]
1. Genetic drift [Option ID = 86788]
2. Genetic anticipation [Option ID = 86789]
3. Genetic polymorphism [Option ID = 86791]
4. Genetic erosion [Option ID = 86790]
Correct Answer :-
Genetic anticipation [Option ID = 86789]
Deviation in Hardy-Weinberg equilibrium in a population would be caused by [Question ID = 51720]
1. Small population size [Option ID = 86875]
2. Lack of mutation [Option ID = 86874]
3. Lack of selection [Option ID = 86873]
4. Random mating [Option ID = 86872]
19)
20)
21)
22)
23)
24)
25)
Correct Answer :-
Small population size [Option ID = 86875]
If the specific growth rate of the microorganism is 0.25 h-1, find out it?s doubling time? [Question ID = 51750]
1. 1.77 h [Option ID = 86992]
2. 2.77 h [Option ID = 86993]
3. 4.77 h [Option ID = 86995]
4. 3.77 h [Option ID = 86994]
Correct Answer :-
2.77 h [Option ID = 86993]
A polymerase that extends DNA chains in template-independent manner is: [Question ID = 51726]
1. Klenow [Option ID = 86897]
2. DNA pol I [Option ID = 86896]
3. Terminal deoxynucleotidyl transferase [Option ID = 86898]
4. Pfu DNA polymerase [Option ID = 86899]
Correct Answer :-
Terminal deoxynucleotidyl transferase [Option ID = 86898]
The Pathogenicity Islands (PAI) which are responsible for emergence of new pathogens are part of: [Question ID = 51696]
1. Integral part of integrons [Option ID = 86778]
2. Core genome of bacteria [Option ID = 86776]
3. Part of plasmids [Option ID = 86779]
4. Flexible genome pool of bacteria [Option ID = 86777]
Correct Answer :-
Core genome of bacteria [Option ID = 86776]
Universal primers used in Sanger?s sequencing of plasmid DNA are: [Question ID = 51769]
1. primers complementary to the vector sequences flanking the multiple cloning site [Option ID = 87071]
2. primers complementary to the antibiotic resistance gene of the vector [Option ID = 87069]
3. primers complementary to the multiple cloning sequence of the vector [Option ID = 87070]
4. primers of random sequence of length 18 nucleotides [Option ID = 87068]
Correct Answer :-
primers complementary to the vector sequences flanking the multiple cloning site [Option ID = 87071]
In 2011, which virus was declared by OIE to be eradicated from earth after successful culmination of global vaccination and
monitoring program for that virus?
[Question ID = 51700]
1. Rinderpest virus [Option ID = 86794]
2. Sheeppox virus [Option ID = 86793]
3. Smallpox virus [Option ID = 86792]
4. Peste-des-petits ruminants virus [Option ID = 86795]
Correct Answer :-
Rinderpest virus [Option ID = 86794]
In the latent state, Herpes simplex virus makes an 8.3 kilobase RNA transcript called: [Question ID = 51682]
1. LMT or latent membrane transcript [Option ID = 86722]
2. None of the above [Option ID = 86723]
3. LAT or latency associated transcript [Option ID = 86720]
4. LANA or latency associated nuclear antigen [Option ID = 86721]
Correct Answer :-
LAT or latency associated transcript [Option ID = 86720]
Variegation in four o?clock plants is an example of:
26)
27)
28)
29)
30)
31)
[Question ID = 51743]
1. Maternal effect [Option ID = 86964]
2. Nuclear inheritance [Option ID = 86966]
3. Organelle heredity [Option ID = 86965]
4. None of the these [Option ID = 86967]
Correct Answer :-
Organelle heredity [Option ID = 86965]
Tetracycline blocks protein synthesis by: [Question ID = 51762]
1. Inhibiting translocase enzyme [Option ID = 87043]
2. Inhibiting peptidyl transferase [Option ID = 87042]
3. Inhibiting binding of aminoacyl tRNA to ribosomes [Option ID = 87040]
4. Inhibiting initiation of translation [Option ID = 87041]
Correct Answer :-
Inhibiting binding of aminoacyl tRNA to ribosomes [Option ID = 87040]
Winogradsky column is often used for the isolation of:
[Question ID = 51734]
1. Escherichia spp. [Option ID = 86930]
2. Pyrolobus spp. [Option ID = 86931]
3. Desulfovibrio spp. [Option ID = 86928]
4. Sulfolobus spp. [Option ID = 86929]
Correct Answer :-
Desulfovibrio spp. [Option ID = 86928]
What are the end products of Entner-Doudoroff pathway? [Question ID = 51713]
1. Pyruvate [Option ID = 86846]
2. Acetaldehyde, pyruvate and CO2 [Option ID = 86847]
3. Acetaldehyde and pyruvate [Option ID = 86845]
4. Ethanol and pyruvate [Option ID = 86844]
Correct Answer :-
Ethanol and pyruvate [Option ID = 86844]
Flagella move the cell by: [Question ID = 51723]
1. An individual flagellum beating in a whip-like motion [Option ID = 86886]
2. Attaching to nearby particles and contracting [Option ID = 86885]
3. Spinning like a propeller [Option ID = 86884]
4. Many flagella beating in a synchronous whip-like motion [Option ID = 86887]
Correct Answer :-
Spinning like a propeller [Option ID = 86884]
Use of microbes for the break down or removal of toxic wastes in water and soil is called as: [Question ID = 51765]
1. Putrefaction [Option ID = 87053]
2. Recycling [Option ID = 87055]
3. Bioremediation [Option ID = 87054]
4. Decomposition [Option ID = 87052]
Correct Answer :-
Bioremediation [Option ID = 87054]
Leucine rich repeats (LRR) are an integral part of which immunological receptor? [Question ID = 51679]
1. Dendritic cell receptor [Option ID = 86710]
2. Toll-like receptor (TLR) [Option ID = 86708]
3. T cell receptor (TCR) [Option ID = 86711]
4. NK cell receptor [Option ID = 86709]
Correct Answer :-
32)
33)
34)
35)
36)
37)
38)
Toll-like receptor (TLR) [Option ID = 86708]
Chondroid of some bacteria are better known as:
[Question ID = 51755]
1. Bacterial plasmids [Option ID = 87014]
2. Bacterial plastids [Option ID = 87013]
3. Bacterial mitochondria [Option ID = 87015]
4. Mesosomes [Option ID = 87012]
Correct Answer :-
Mesosomes [Option ID = 87012]
A condition in which a single mutation causes multiple phenotypic effects is: [Question ID = 51675]
1. Multiphenotypy [Option ID = 86695]
2. Pleiotropy [Option ID = 86692]
3. Epigenesis [Option ID = 86694]
4. Epistasis [Option ID = 86693]
Correct Answer :-
Pleiotropy [Option ID = 86692]
The blood samples of athletes can be tested for the presence of certain performance enhancing drugs using: [Question ID = 51686]
1. Real time PCRs [Option ID = 86738]
2. Microarrays [Option ID = 86737]
3. Mass spectrometry [Option ID = 86736]
4. Fluorescence spectroscopy [Option ID = 86739]
Correct Answer :-
Mass spectrometry [Option ID = 86736]
Cork screw shaped forms of bacteria are [Question ID = 51721]
1. Stalked bacteria [Option ID = 86877]
2. Bacilli [Option ID = 86876]
3. Spirochaetes [Option ID = 86878]
4. Actinomycetes [Option ID = 86879]
Correct Answer :-
Spirochaetes [Option ID = 86878]
How many molecules of carbon dioxide are released after five rounds of Krebs cycle? [Question ID = 51719]
1. 18 [Option ID = 86871]
2. 12 [Option ID = 86870]
3. 10 [Option ID = 86869]
4. 6 [Option ID = 86868]
Correct Answer :-
10 [Option ID = 86869]
The atomizer is used in the following process: [Question ID = 51756]
1. Liquid-liquid extraction [Option ID = 87017]
2. None of the these [Option ID = 87019]
3. Cross flow filtration [Option ID = 87018]
4. Spray drying [Option ID = 87016]
Correct Answer :-
Spray drying [Option ID = 87016]
The process of nonreciprocal recombination by which one allele in a heterozygote is converted into the corresponding allele is called:
[Question ID = 51707]
1. Gene targeting [Option ID = 86820]
2. Gene knockout [Option ID = 86821]
39)
40)
41)
42)
43)
44)
3. Gene amplification [Option ID = 86823]
4. Gene conversion [Option ID = 86822]
Correct Answer :-
Gene conversion [Option ID = 86822]
The process of RNA inactivation by siRNAs is termed as: [Question ID = 51758]
1. RNA dysfunction [Option ID = 87027]
2. RNA silencing [Option ID = 87024]
3. RNA interference [Option ID = 87025]
4. Short RNA inactivation [Option ID = 87026]
Correct Answer :-
RNA interference [Option ID = 87025]
The production of high-fructose corn syrup (HFCS) from glucose involves which of the following enzymes? [Question ID = 51760]
1. Hexokinase [Option ID = 87035]
2. Invertase [Option ID = 87034]
3. Glucose isomerase [Option ID = 87032]
4. Glucose oxidase [Option ID = 87033]
Correct Answer :-
Glucose isomerase [Option ID = 87032]
This food-borne pathogen is very well known to grow even at refrigeration temperature:
[Question ID = 51691]
1. Salmonella enteritidis [Option ID = 86759]
2. Bacillus subtilis [Option ID = 86756]
3. Listeria monocytogenes [Option ID = 86757]
4. Vibrio cholerae [Option ID = 86758]
Correct Answer :-
Listeria monocytogenes [Option ID = 86757]
The term ecosystem was coined by: [Question ID = 51761]
1. Winogradsky [Option ID = 87036]
2. Pasteur [Option ID = 87039]
3. Flor [Option ID = 87038]
4. Tansley [Option ID = 87037]
Correct Answer :-
Tansley [Option ID = 87037]
In lactic acid fermentation the final electron acceptor is:
[Question ID = 51735]
1. Acetyl CoA [Option ID = 86934]
2. NAD
+
[Option ID = 86932]
3. Pyruvate [Option ID = 86933]
4. Glucose [Option ID = 86935]
Correct Answer :-
Pyruvate [Option ID = 86933]
Trickling filters are used in the following process [Question ID = 51770]
1. Waste water treatment [Option ID = 87072]
2. Protein recovery from biomass [Option ID = 87074]
3. Milk pasteurization [Option ID = 87073]
4. All of the these [Option ID = 87075]
Correct Answer :-
Waste water treatment [Option ID = 87072]
45)
46)
47)
48)
49)
50)
51)
The polio virus receptor which is an integral membrane protein is a member of immunoglobulin superfamily of proteins, and also is
involved in establishment of intercellular junctions between epithelial cells: [Question ID = 51688]
1. CD 55 [Option ID = 86744]
2. CD 51 [Option ID = 86746]
3. CD 15 [Option ID = 86747]
4. CD 155 [Option ID = 86745]
Correct Answer :-
CD 155 [Option ID = 86745]
Endotoxic shock produced by gram negative bacteremia is characterized by:
[Question ID = 51693]
1. Loss of large volumes of blood from host [Option ID = 86765]
2. Extensive internal haemorrhage in the organs of the host [Option ID = 86764]
3. Disseminated intravascular coagulation in the host [Option ID = 86766]
4. Release of minimal amount of cytokines in the host [Option ID = 86767]
Correct Answer :-
Disseminated intravascular coagulation in the host [Option ID = 86766]
Interferon free direct acting antivirals (DAAs) therapy has revolutionized treatment for which virus infection in recent years?
[Question ID = 51715]
1. Human papilloma virus [Option ID = 86855]
2. Hepatitis C virus [Option ID = 86854]
3. Chickenpox virus [Option ID = 86852]
4. Human Immunodeficiency virus [Option ID = 86853]
Correct Answer :-
Hepatitis C virus [Option ID = 86854]
A transmembrane protein that mediates the adhesion of cells to the extracellular matrix is: [Question ID = 51692]
1. Fibronectin [Option ID = 86761]
2. Laminin [Option ID = 86760]
3. Entactin [Option ID = 86763]
4. Integrin [Option ID = 86762]
Correct Answer :-
Integrin [Option ID = 86762]
Degranulation of most cells during hypersensitivity type I is known to produce: [Question ID = 51681]
1. Histamine, serotonin and leukotrienes [Option ID = 86718]
2. Histamine alone [Option ID = 86716]
3. Histamine, epinephrine and nor-epinephrine [Option ID = 86719]
4. Only Histamine and serotonin [Option ID = 86717]
Correct Answer :-
Histamine, serotonin and leukotrienes [Option ID = 86718]
Thiosulphate citrate bile salt sugar (TCBS) medium is used for selective isolation of:
[Question ID = 51685]
1. Non-cholera Vibrios only [Option ID = 86732]
2. Non-01 non-0139 Vibrio cholerae [Option ID = 86735]
3. Most Vibrios [Option ID = 86733]
4. Mostly Vibrio parahemolyticus [Option ID = 86734]
Correct Answer :-
Most Vibrios [Option ID = 86733]
Howard Walter Florey and Ernst Boris Chain were given the Nobel Prize for the process development of: [Question ID = 51752]
52)
53)
54)
55)
56)
57)
58)
1. Monoclonal antibodies [Option ID = 87000]
2. Penicillin [Option ID = 87001]
3. Erythromycin [Option ID = 87002]
4. Glutamic acid [Option ID = 87003]
Correct Answer :-
Penicillin [Option ID = 87001]
A type of cell adhesion molecule that recognizes oligosaccharides exposed on the cell surface: [Question ID = 51710]
1. Exportins [Option ID = 86834]
2. Integrins [Option ID = 86835]
3. Laminins [Option ID = 86832]
4. Selectins [Option ID = 86833]
Correct Answer :-
Selectins [Option ID = 86833]
The method of post-transcriptional gene silencing is particularly useful in: [Question ID = 51753]
1. Animals [Option ID = 87004]
2. Microbes [Option ID = 87007]
3. Plants [Option ID = 87005]
4. Insects [Option ID = 87006]
Correct Answer :-
Plants [Option ID = 87005]
When B DNA is slightly dehydrated, it acquires: [Question ID = 51733]
1. Z conformation [Option ID = 86926]
2. Positive supercoils [Option ID = 86925]
3. A conformation [Option ID = 86927]
4. Negative supercoils [Option ID = 86924]
Correct Answer :-
A conformation [Option ID = 86927]
The Toll-like receptor (TLR) which is known to bind the lipopolysaccharide (LPS) of gram negative bacteria: [Question ID = 51677]
1. TLR-4 [Option ID = 86702]
2. TLR-2 [Option ID = 86701]
3. TLR-1 [Option ID = 86700]
4. TLR-10 [Option ID = 86703]
Correct Answer :-
TLR-4 [Option ID = 86702]
Which of the following skin disinfectant(s) is/are used frequently? [Question ID = 51703]
1. Isopropyl alcohol [Option ID = 86804]
2. Ethyl alcohol [Option ID = 86805]
3. Both of the above [Option ID = 86806]
4. None of the these [Option ID = 86807]
Correct Answer :-
Both of the above [Option ID = 86806]
Which of the following statements is not true? [Question ID = 51672]
1. Linkers are often used as cloning aids when making cDNA libraries [Option ID = 86682]
2. cDNA libraries made in lambda phage vectors are screened by colony hybridization. [Option ID = 86683]
3. To obtain single stranded DNA of a target sequence we clone the sequence into a phagemid [Option ID = 86681]
4. When cloning large genomic contigs into YACs we may get chimeric inserts [Option ID = 86680]
Correct Answer :-
cDNA libraries made in lambda phage vectors are screened by colony hybridization. [Option ID = 86683]
Which of the following has beads on a string structure? [Question ID = 51674]
59)
60)
61)
62)
63)
64)
65)
1. Chromatin [Option ID = 86689]
2. Chromosomes [Option ID = 86688]
3. Heterochromatin [Option ID = 86691]
4. Nucleosomes [Option ID = 86690]
Correct Answer :-
Nucleosomes [Option ID = 86690]
Which of the following is NOT a feature of eukaryotic gene expression? [Question ID = 51764]
1. Multiple copies of nuclear genes and pseudogenes can occur [Option ID = 87051]
2. RNA synthesis and protein synthesis are coupled [Option ID = 87050]
3. Many genes are interrupted by noncoding DNA sequences [Option ID = 87049]
4. Polycistronic mRNAs are very rare [Option ID = 87048]
Correct Answer :-
RNA synthesis and protein synthesis are coupled [Option ID = 87050]
Which of the following is the best explanation of lock and key theory of enzyme action? [Question ID = 51697]
1. Enzyme determines the direction of reaction [Option ID = 86780]
2. Enzyme interacts with substrate and lowers activation energy of the reaction [Option ID = 86783]
3. Enzyme speeds up reaction as it comes in contact with reactants [Option ID = 86781]
4. Compounds similar in structure to substrate inhibit enzyme activity [Option ID = 86782]
Correct Answer :-
Compounds similar in structure to substrate inhibit enzyme activity [Option ID = 86782]
Which of the following is not an A-B type of toxin? [Question ID = 51763]
1. Diphtheria toxin [Option ID = 87044]
2. Tetanus toxin [Option ID = 87046]
3. Pertussis toxin [Option ID = 87047]
4. Cholera toxin [Option ID = 87045]
Correct Answer :-
Tetanus toxin [Option ID = 87046]
Which of the following methods are used for enzyme immobilization? [Question ID = 51759]
1. All of the these [Option ID = 87031]
2. Covalent binding [Option ID = 87030]
3. Adsorption [Option ID = 87028]
4. Affinity binding [Option ID = 87029]
Correct Answer :-
All of the these [Option ID = 87031]
Which of the following is responsible for unusual resistance of bacterial spores to heat? [Question ID = 51766]
1. Polylysine [Option ID = 87056]
2. Dipicolinic acid [Option ID = 87057]
3. Mycolic acid [Option ID = 87058]
4. NAM-NAG [Option ID = 87059]
Correct Answer :-
Dipicolinic acid [Option ID = 87057]
Which of the following is not true of RNA synthesis (transcription)? [Question ID = 51739]
1. In transcription, U is inserted opposite T [Option ID = 86950]
2. RNA polymerase needs a primer to initiate transcription [Option ID = 86949]
3. New nucleotides are added on to the 3' OH of the ribose sugar [Option ID = 86951]
4. RNA synthesis is always in the 5' - 3' direction. [Option ID = 86948]
Correct Answer :-
RNA polymerase needs a primer to initiate transcription [Option ID = 86949]
Pathogen associated molecular patterns (PAMP) are detected by: [Question ID = 51722]
66)
67)
68)
69)
70)
71)
1. B cell receptors [Option ID = 86882]
2. Non-leucine rich receptors [Option ID = 86883]
3. Toll-like receptors [Option ID = 86880]
4. T cell receptors [Option ID = 86881]
Correct Answer :-
Toll-like receptors [Option ID = 86880]
Examples of epimers are: [Question ID = 51714]
1. Both a and c [Option ID = 86851]
2. Glucose and galactose [Option ID = 86848]
3. Glucose and mannose [Option ID = 86850]
4. Glucose and fructose [Option ID = 86849]
Correct Answer :-
Both a and c [Option ID = 86851]
In 1961, Tim Loeb and Norton Zinder discovered these as the result of their search for phages whose replication depends on E. coli F-
pili which is used for bacterial conjugation
[Question ID = 51678]
1. Bacteriophage Lambda [Option ID = 86706]
2. Bacteriophage T7 [Option ID = 86705]
3. RNA coliphage [Option ID = 86704]
4. PhiX174 [Option ID = 86707]
Correct Answer :-
RNA coliphage [Option ID = 86704]
The most abundant type of RNA in the cells is: [Question ID = 51731]
1. rRNA [Option ID = 86916]
2. tRNA [Option ID = 86917]
3. mRNA [Option ID = 86918]
4. hnRNA [Option ID = 86919]
Correct Answer :-
rRNA [Option ID = 86916]
Expression of which of the early genes of Lambda phage leads to the replication of its DNA? [Question ID = 51676]
1. O and P [Option ID = 86696]
2. P and Q [Option ID = 86697]
3. O, P and Q [Option ID = 86699]
4. O and Q [Option ID = 86698]
Correct Answer :-
O and P [Option ID = 86696]
The 3, 5-Dinitrosalicylic acid is used for the estimation of: [Question ID = 51747]
1. Phenols [Option ID = 86983]
2. Amino acids [Option ID = 86981]
3. Starch [Option ID = 86980]
4. Reducing sugars [Option ID = 86982]
Correct Answer :-
Reducing sugars [Option ID = 86982]
You have isolated glucose oxidase which catalyses glucose oxidation and exhibits 50% V
max
at 0.05 M glucose. If you want to
increase the reaction rate to 90% then what concentration of glucose you should use in the reaction?
[Question ID = 51694]
1. 1M [Option ID = 86768]
2. 0.45 M [Option ID = 86769]
3. 0.30 M [Option ID = 86770]
72)
73)
74)
75)
76)
77)
4. 0.40 M [Option ID = 86771]
Correct Answer :-
0.45 M [Option ID = 86769]
Which of the following is not used in the pulping process of paper making? [Question ID = 51767]
1. Kraft process [Option ID = 87060]
2. Chlorite treatment [Option ID = 87063]
3. Bioleaching process [Option ID = 87062]
4. Sulfite process [Option ID = 87061]
Correct Answer :-
Bioleaching process [Option ID = 87062]
Which among these kinds of viruses do not exist? [Question ID = 51702]
1. Helical non-enveloped plant viruses [Option ID = 86800]
2. Helical enveloped animal viruses [Option ID = 86803]
3. Helical non-enveloped animal viruses [Option ID = 86802]
4. Icosahedral plant viruses [Option ID = 86801]
Correct Answer :-
Helical non-enveloped animal viruses [Option ID = 86802]
Which one is not a subviral agent? [Question ID = 51684]
1. Viroid [Option ID = 86728]
2. Virusoid [Option ID = 86730]
3. Prion [Option ID = 86731]
4. Mimivirus [Option ID = 86729]
Correct Answer :-
Mimivirus [Option ID = 86729]
Ames Test uses Salmonella typhimurium mutants to screen chemical agents that might be carcinogenic. The rationale behind this test
is:
[Question ID = 51746]
1. DNA repair in bacteria is inefficient [Option ID = 86979]
2. most carcinogenic agents are mutagenic [Option ID = 86977]
3. the rate of spontaneous mutations in bacteria is much higher than in eukaryotes [Option ID = 86978]
4. mutations in bacteria result in auxotrophy [Option ID = 86976]
Correct Answer :-
most carcinogenic agents are mutagenic [Option ID = 86977]
Brandy is a distilled form of: [Question ID = 51730]
1. Wine [Option ID = 86915]
2. Whisky [Option ID = 86913]
3. Beer [Option ID = 86912]
4. Vodka [Option ID = 86914]
Correct Answer :-
Wine [Option ID = 86915]
A CSTR process where only feed rate is used to control the specific growth rate is called:
[Question ID = 51745]
1. Turbidostat [Option ID = 86974]
2. DOstat [Option ID = 86975]
3. Retentostat [Option ID = 86973]
4. Chemostat [Option ID = 86972]
Correct Answer :-
Chemostat [Option ID = 86972]
78)
79)
80)
81)
82)
83)
84)
An automated machine which is used for rapid (90 minutes) identification of Mycobacterium tuberculosis in the clinical sample:
[Question ID = 51711]
1. Gene Expert [Option ID = 86837]
2. BATAC [Option ID = 86836]
3. Vitek-2 [Option ID = 86838]
4. Microscan by Siemens [Option ID = 86839]
Correct Answer :-
Gene Expert [Option ID = 86837]
An antimicrobial agent which was a very common constituent of several toiletries but has recently been banned:
[Question ID = 51695]
1. Hexachlorophene [Option ID = 86773]
2. Ketoconazole [Option ID = 86775]
3. Iodine [Option ID = 86772]
4. Triclosan [Option ID = 86774]
Correct Answer :-
Triclosan [Option ID = 86774]
An autosomal dominant disorder caused due to the expansion of trinucleotide repeats is [Question ID = 51680]
1. Klinefelter syndrome [Option ID = 86713]
2. Huntington disease [Option ID = 86712]
3. Alzheimer disease [Option ID = 86715]
4. Creutzfeldt-Jakob disease [Option ID = 86714]
Correct Answer :-
Huntington disease [Option ID = 86712]
Type II modification methylases methylate DNA at: [Question ID = 51683]
1. Cytosine and guanine [Option ID = 86727]
2. Adenine and thymine [Option ID = 86726]
3. Cytosine and adenine [Option ID = 86725]
4. Adenine and guanine [Option ID = 86724]
Correct Answer :-
Cytosine and adenine [Option ID = 86725]
The nucleotides in RNA are joined by: [Question ID = 51718]
1. 3?-5? phosphodiester bond [Option ID = 86864]
2. 3?-3? phosphodiester bond [Option ID = 86866]
3. 5?-3? phosphodiester bond [Option ID = 86865]
4. 5?-5? phosphodiester bond [Option ID = 86867]
Correct Answer :-
3?-5? phosphodiester bond [Option ID = 86864]
In prokaryotes, the first amino acid in the polypeptide chain is: [Question ID = 51741]
1. Can be any amino acid [Option ID = 86959]
2. N-methyl methionine [Option ID = 86957]
3. Methionine [Option ID = 86956]
4. N-formyl methionine [Option ID = 86958]
Correct Answer :-
N-formyl methionine [Option ID = 86958]
You were asked to electrophorese a sample of hyper-immune serum using agarose gel electrophoresis at pH-8.6. Which would be the
fastest moving fraction? [Question ID = 51701]
1. Fibrinogen [Option ID = 86799]
85)
86)
87)
88)
89)
90)
2. Albumin [Option ID = 86797]
3. ?-globulin [Option ID = 86798]
4. ?-globulin [Option ID = 86796]
Correct Answer :-
Albumin [Option ID = 86797]
To identify the promoter motif to which a transcription factor binds we can use: [Question ID = 51704]
1. DNA sequencing [Option ID = 86810]
2. DNA footprinting [Option ID = 86809]
3. DNA barcoding [Option ID = 86811]
4. DNA fingerprinting [Option ID = 86808]
Correct Answer :-
DNA footprinting [Option ID = 86809]
Iodine used in Gram-staining serves as a: [Question ID = 51737]
1. Catalyst [Option ID = 86941]
2. Chelator [Option ID = 86940]
3. Mordant [Option ID = 86942]
4. Co-factor [Option ID = 86943]
Correct Answer :-
Mordant [Option ID = 86942]
Long acting thyroid stimulating (LATS) molecule are: [Question ID = 51709]
1. Antibodies to thyroid stimulating hormone (TSH) [Option ID = 86828]
2. Antibodies to thyroxine [Option ID = 86830]
3. Antibodies to TSH receptors [Option ID = 86829]
4. Antibodies to triidothyronine [Option ID = 86831]
Correct Answer :-
Antibodies to TSH receptors [Option ID = 86829]
In genetic engineering, in vitro packaging is used for:
[Question ID = 51751]
1. cloning a gene of size 2-4 kb into a plasmid and then incubating with packaging extracts to transform bacteria [Option ID = 86999]
2. cloning large genomic contigs into BACs and then incubating with packaging extracts to transform bacteria with the BAC clones. [Option ID = 86996]
3. Incorporating recombinant DNA into infectious bacteriophage particles. [Option ID = 86998]
4. Translating proteins using rabbit reticulocyte lysates. [Option ID = 86997]
Correct Answer :-
Incorporating recombinant DNA into infectious bacteriophage particles. [Option ID = 86998]
In a bioreactor, impellers increase the surface area of:
[Question ID = 51744]
1. Substrates [Option ID = 86970]
2. Cells [Option ID = 86968]
3. All of the these [Option ID = 86971]
4. Air bubbles [Option ID = 86969]
Correct Answer :-
Air bubbles [Option ID = 86969]
Which one of these is not an obligatory intracellular parasite?
[Question ID = 51671]
1. Rickettsia rickettsii [Option ID = 86676]
2. Chlamydia suis [Option ID = 86677]
3. Rhodococcus equi [Option ID = 86678]
4. Mycobacterium leprae [Option ID = 86679]
FirstRanker.com - FirstRanker's Choice
1)
2)
3)
4)
5)
6)
DU MSc Microbiology
Topic:- DU_J18_MSC_MICRO
Sanger?s method of sequencing is: [Question ID = 51724]
1. Sequencing by chain synthesis [Option ID = 86888]
2. Sequencing by chain cleavage [Option ID = 86890]
3. Sequencing by chain termination [Option ID = 86889]
4. Sequencing by chain ligation [Option ID = 86891]
Correct Answer :-
Sequencing by chain termination [Option ID = 86889]
What is the hydrogen ion concentration in moles/L, if pH of a solution is 3.0?
[Question ID = 51740]
1. 1 x 10
-3
[Option ID = 86954]
2. 4 x 10
-3
[Option ID = 86955]
3. 3 x 10
-3
[Option ID = 86953]
4. 3 [Option ID = 86952]
Correct Answer :-
1 x 10
-3
[Option ID = 86954]
A taxonomic system which takes into consideration a large number of phenotypic and genotypic characteristics of the organism is
called: [Question ID = 51757]
1. Numerical taxonomy [Option ID = 87021]
2. Molecular taxonomy [Option ID = 87022]
3. Phylogenetics [Option ID = 87020]
4. Phylogenomics [Option ID = 87023]
Correct Answer :-
Numerical taxonomy [Option ID = 87021]
The cytokine which is most commonly used for proliferation of bone marrow cells in vitro:
[Question ID = 51768]
1. TGF-? [Option ID = 87066]
2. GM-CSF [Option ID = 87064]
3. IFN-? [Option ID = 87065]
4. IL-2 [Option ID = 87067]
Correct Answer :-
GM-CSF [Option ID = 87064]
The interaction of two proteins within a cell can be visualized by:
[Question ID = 51689]
1. All of the above [Option ID = 86751]
2. Biomolecules with fluorescence complementation [Option ID = 86749]
3. Fluorescence recovery effectively transferred [Option ID = 86748]
4. Fluorescence resonance energy transfer [Option ID = 86750]
Correct Answer :-
Fluorescence resonance energy transfer [Option ID = 86750]
The arrangement in which flagella are distributed all around the bacterial cell is known as:
7)
8)
9)
10)
11)
[Question ID = 51727]
1. Amphitrichous [Option ID = 86901]
2. Peritrichous [Option ID = 86902]
3. Monotrichous [Option ID = 86903]
4. Lophotrichous [Option ID = 86900]
Correct Answer :-
Peritrichous [Option ID = 86902]
The dried female flowers of Humulus lupulus are used in the production of:
[Question ID = 51725]
1. Wine [Option ID = 86893]
2. Bread [Option ID = 86892]
3. Beer [Option ID = 86894]
4. Tofu [Option ID = 86895]
Correct Answer :-
Beer [Option ID = 86894]
The Swiss cheese ripening process is done using:
[Question ID = 51738]
1. Geotrichium candidum [Option ID = 86947]
2. Penicillium roqueforti [Option ID = 86945]
3. Penicillium camemberti [Option ID = 86944]
4. Propionibacterium sp. [Option ID = 86946]
Correct Answer :-
Propionibacterium sp. [Option ID = 86946]
The culture media containing heat labile constituents are best sterilized by:
[Question ID = 51687]
1. UV-irradiation [Option ID = 86743]
2. Filtration using membrane filter [Option ID = 86742]
3. Dry heat at 180
o
C for 30 min [Option ID = 86740]
4. Autoclaving at 15 psi for 30 min [Option ID = 86741]
Correct Answer :-
Filtration using membrane filter [Option ID = 86742]
The koji for miso is a culture of:
[Question ID = 51736]
1. Aspergillus oryzae [Option ID = 86937]
2. Aspergillus lentulus [Option ID = 86939]
3. Aspergillus flavus [Option ID = 86936]
4. Aspergillus fumigatus [Option ID = 86938]
Correct Answer :-
Aspergillus oryzae [Option ID = 86937]
Klinefelter syndrome is characterized by: [Question ID = 51712]
1. chromosome 19 trisomy [Option ID = 86841]
2. chromosome 21 monosomy [Option ID = 86843]
3. one or more extra X chromosomes [Option ID = 86840]
4. fragile X chromosome [Option ID = 86842]
Correct Answer :-
one or more extra X chromosomes [Option ID = 86840]
12)
13)
14)
15)
16)
17)
18)
Peptidoglycan is also known as: [Question ID = 51732]
1. N-acetyl glucosamine [Option ID = 86922]
2. N-acetyl muramic acid [Option ID = 86920]
3. Murein mucopeptide [Option ID = 86921]
4. Mesodiaminopimelic acid [Option ID = 86923]
Correct Answer :-
Murein mucopeptide [Option ID = 86921]
All of the following are sporicidal except: [Question ID = 51706]
1. Formaldehyde [Option ID = 86818]
2. Glutaraldehyde [Option ID = 86816]
3. Ethylene oxide [Option ID = 86817]
4. Alcohol [Option ID = 86819]
Correct Answer :-
Alcohol [Option ID = 86819]
The time required to kill 90% of the micro-organisms in a sample at a specific temperature is the [Question ID = 51698]
1. Decimal reduction time [Option ID = 86785]
2. Log reduction [Option ID = 86786]
3. Thermal inactivation constant [Option ID = 86787]
4. Thermal death point [Option ID = 86784]
Correct Answer :-
Decimal reduction time [Option ID = 86785]
The new antigens which appear on the tumors produced by irradiation are called: [Question ID = 51705]
1. Tumor-specific transplantation antigens (TSTA) [Option ID = 86813]
2. Carcino-embryonic antigens [Option ID = 86814]
3. Tumor associated antigens (TAA) [Option ID = 86812]
4. Tumor infiltrating antigens [Option ID = 86815]
Correct Answer :-
Tumor-specific transplantation antigens (TSTA) [Option ID = 86813]
Thermoduric bacteria are majorly found in:
[Question ID = 51729]
1. Pasteurized milk and dried milk [Option ID = 86909]
2. Ice-creams [Option ID = 86908]
3. None of the these [Option ID = 86911]
4. Vegetables [Option ID = 86910]
Correct Answer :-
Pasteurized milk and dried milk [Option ID = 86909]
The phenomenon in which the severity of symptoms in genetic disorders increases from generation to generation is called: [Question
ID = 51699]
1. Genetic drift [Option ID = 86788]
2. Genetic anticipation [Option ID = 86789]
3. Genetic polymorphism [Option ID = 86791]
4. Genetic erosion [Option ID = 86790]
Correct Answer :-
Genetic anticipation [Option ID = 86789]
Deviation in Hardy-Weinberg equilibrium in a population would be caused by [Question ID = 51720]
1. Small population size [Option ID = 86875]
2. Lack of mutation [Option ID = 86874]
3. Lack of selection [Option ID = 86873]
4. Random mating [Option ID = 86872]
19)
20)
21)
22)
23)
24)
25)
Correct Answer :-
Small population size [Option ID = 86875]
If the specific growth rate of the microorganism is 0.25 h-1, find out it?s doubling time? [Question ID = 51750]
1. 1.77 h [Option ID = 86992]
2. 2.77 h [Option ID = 86993]
3. 4.77 h [Option ID = 86995]
4. 3.77 h [Option ID = 86994]
Correct Answer :-
2.77 h [Option ID = 86993]
A polymerase that extends DNA chains in template-independent manner is: [Question ID = 51726]
1. Klenow [Option ID = 86897]
2. DNA pol I [Option ID = 86896]
3. Terminal deoxynucleotidyl transferase [Option ID = 86898]
4. Pfu DNA polymerase [Option ID = 86899]
Correct Answer :-
Terminal deoxynucleotidyl transferase [Option ID = 86898]
The Pathogenicity Islands (PAI) which are responsible for emergence of new pathogens are part of: [Question ID = 51696]
1. Integral part of integrons [Option ID = 86778]
2. Core genome of bacteria [Option ID = 86776]
3. Part of plasmids [Option ID = 86779]
4. Flexible genome pool of bacteria [Option ID = 86777]
Correct Answer :-
Core genome of bacteria [Option ID = 86776]
Universal primers used in Sanger?s sequencing of plasmid DNA are: [Question ID = 51769]
1. primers complementary to the vector sequences flanking the multiple cloning site [Option ID = 87071]
2. primers complementary to the antibiotic resistance gene of the vector [Option ID = 87069]
3. primers complementary to the multiple cloning sequence of the vector [Option ID = 87070]
4. primers of random sequence of length 18 nucleotides [Option ID = 87068]
Correct Answer :-
primers complementary to the vector sequences flanking the multiple cloning site [Option ID = 87071]
In 2011, which virus was declared by OIE to be eradicated from earth after successful culmination of global vaccination and
monitoring program for that virus?
[Question ID = 51700]
1. Rinderpest virus [Option ID = 86794]
2. Sheeppox virus [Option ID = 86793]
3. Smallpox virus [Option ID = 86792]
4. Peste-des-petits ruminants virus [Option ID = 86795]
Correct Answer :-
Rinderpest virus [Option ID = 86794]
In the latent state, Herpes simplex virus makes an 8.3 kilobase RNA transcript called: [Question ID = 51682]
1. LMT or latent membrane transcript [Option ID = 86722]
2. None of the above [Option ID = 86723]
3. LAT or latency associated transcript [Option ID = 86720]
4. LANA or latency associated nuclear antigen [Option ID = 86721]
Correct Answer :-
LAT or latency associated transcript [Option ID = 86720]
Variegation in four o?clock plants is an example of:
26)
27)
28)
29)
30)
31)
[Question ID = 51743]
1. Maternal effect [Option ID = 86964]
2. Nuclear inheritance [Option ID = 86966]
3. Organelle heredity [Option ID = 86965]
4. None of the these [Option ID = 86967]
Correct Answer :-
Organelle heredity [Option ID = 86965]
Tetracycline blocks protein synthesis by: [Question ID = 51762]
1. Inhibiting translocase enzyme [Option ID = 87043]
2. Inhibiting peptidyl transferase [Option ID = 87042]
3. Inhibiting binding of aminoacyl tRNA to ribosomes [Option ID = 87040]
4. Inhibiting initiation of translation [Option ID = 87041]
Correct Answer :-
Inhibiting binding of aminoacyl tRNA to ribosomes [Option ID = 87040]
Winogradsky column is often used for the isolation of:
[Question ID = 51734]
1. Escherichia spp. [Option ID = 86930]
2. Pyrolobus spp. [Option ID = 86931]
3. Desulfovibrio spp. [Option ID = 86928]
4. Sulfolobus spp. [Option ID = 86929]
Correct Answer :-
Desulfovibrio spp. [Option ID = 86928]
What are the end products of Entner-Doudoroff pathway? [Question ID = 51713]
1. Pyruvate [Option ID = 86846]
2. Acetaldehyde, pyruvate and CO2 [Option ID = 86847]
3. Acetaldehyde and pyruvate [Option ID = 86845]
4. Ethanol and pyruvate [Option ID = 86844]
Correct Answer :-
Ethanol and pyruvate [Option ID = 86844]
Flagella move the cell by: [Question ID = 51723]
1. An individual flagellum beating in a whip-like motion [Option ID = 86886]
2. Attaching to nearby particles and contracting [Option ID = 86885]
3. Spinning like a propeller [Option ID = 86884]
4. Many flagella beating in a synchronous whip-like motion [Option ID = 86887]
Correct Answer :-
Spinning like a propeller [Option ID = 86884]
Use of microbes for the break down or removal of toxic wastes in water and soil is called as: [Question ID = 51765]
1. Putrefaction [Option ID = 87053]
2. Recycling [Option ID = 87055]
3. Bioremediation [Option ID = 87054]
4. Decomposition [Option ID = 87052]
Correct Answer :-
Bioremediation [Option ID = 87054]
Leucine rich repeats (LRR) are an integral part of which immunological receptor? [Question ID = 51679]
1. Dendritic cell receptor [Option ID = 86710]
2. Toll-like receptor (TLR) [Option ID = 86708]
3. T cell receptor (TCR) [Option ID = 86711]
4. NK cell receptor [Option ID = 86709]
Correct Answer :-
32)
33)
34)
35)
36)
37)
38)
Toll-like receptor (TLR) [Option ID = 86708]
Chondroid of some bacteria are better known as:
[Question ID = 51755]
1. Bacterial plasmids [Option ID = 87014]
2. Bacterial plastids [Option ID = 87013]
3. Bacterial mitochondria [Option ID = 87015]
4. Mesosomes [Option ID = 87012]
Correct Answer :-
Mesosomes [Option ID = 87012]
A condition in which a single mutation causes multiple phenotypic effects is: [Question ID = 51675]
1. Multiphenotypy [Option ID = 86695]
2. Pleiotropy [Option ID = 86692]
3. Epigenesis [Option ID = 86694]
4. Epistasis [Option ID = 86693]
Correct Answer :-
Pleiotropy [Option ID = 86692]
The blood samples of athletes can be tested for the presence of certain performance enhancing drugs using: [Question ID = 51686]
1. Real time PCRs [Option ID = 86738]
2. Microarrays [Option ID = 86737]
3. Mass spectrometry [Option ID = 86736]
4. Fluorescence spectroscopy [Option ID = 86739]
Correct Answer :-
Mass spectrometry [Option ID = 86736]
Cork screw shaped forms of bacteria are [Question ID = 51721]
1. Stalked bacteria [Option ID = 86877]
2. Bacilli [Option ID = 86876]
3. Spirochaetes [Option ID = 86878]
4. Actinomycetes [Option ID = 86879]
Correct Answer :-
Spirochaetes [Option ID = 86878]
How many molecules of carbon dioxide are released after five rounds of Krebs cycle? [Question ID = 51719]
1. 18 [Option ID = 86871]
2. 12 [Option ID = 86870]
3. 10 [Option ID = 86869]
4. 6 [Option ID = 86868]
Correct Answer :-
10 [Option ID = 86869]
The atomizer is used in the following process: [Question ID = 51756]
1. Liquid-liquid extraction [Option ID = 87017]
2. None of the these [Option ID = 87019]
3. Cross flow filtration [Option ID = 87018]
4. Spray drying [Option ID = 87016]
Correct Answer :-
Spray drying [Option ID = 87016]
The process of nonreciprocal recombination by which one allele in a heterozygote is converted into the corresponding allele is called:
[Question ID = 51707]
1. Gene targeting [Option ID = 86820]
2. Gene knockout [Option ID = 86821]
39)
40)
41)
42)
43)
44)
3. Gene amplification [Option ID = 86823]
4. Gene conversion [Option ID = 86822]
Correct Answer :-
Gene conversion [Option ID = 86822]
The process of RNA inactivation by siRNAs is termed as: [Question ID = 51758]
1. RNA dysfunction [Option ID = 87027]
2. RNA silencing [Option ID = 87024]
3. RNA interference [Option ID = 87025]
4. Short RNA inactivation [Option ID = 87026]
Correct Answer :-
RNA interference [Option ID = 87025]
The production of high-fructose corn syrup (HFCS) from glucose involves which of the following enzymes? [Question ID = 51760]
1. Hexokinase [Option ID = 87035]
2. Invertase [Option ID = 87034]
3. Glucose isomerase [Option ID = 87032]
4. Glucose oxidase [Option ID = 87033]
Correct Answer :-
Glucose isomerase [Option ID = 87032]
This food-borne pathogen is very well known to grow even at refrigeration temperature:
[Question ID = 51691]
1. Salmonella enteritidis [Option ID = 86759]
2. Bacillus subtilis [Option ID = 86756]
3. Listeria monocytogenes [Option ID = 86757]
4. Vibrio cholerae [Option ID = 86758]
Correct Answer :-
Listeria monocytogenes [Option ID = 86757]
The term ecosystem was coined by: [Question ID = 51761]
1. Winogradsky [Option ID = 87036]
2. Pasteur [Option ID = 87039]
3. Flor [Option ID = 87038]
4. Tansley [Option ID = 87037]
Correct Answer :-
Tansley [Option ID = 87037]
In lactic acid fermentation the final electron acceptor is:
[Question ID = 51735]
1. Acetyl CoA [Option ID = 86934]
2. NAD
+
[Option ID = 86932]
3. Pyruvate [Option ID = 86933]
4. Glucose [Option ID = 86935]
Correct Answer :-
Pyruvate [Option ID = 86933]
Trickling filters are used in the following process [Question ID = 51770]
1. Waste water treatment [Option ID = 87072]
2. Protein recovery from biomass [Option ID = 87074]
3. Milk pasteurization [Option ID = 87073]
4. All of the these [Option ID = 87075]
Correct Answer :-
Waste water treatment [Option ID = 87072]
45)
46)
47)
48)
49)
50)
51)
The polio virus receptor which is an integral membrane protein is a member of immunoglobulin superfamily of proteins, and also is
involved in establishment of intercellular junctions between epithelial cells: [Question ID = 51688]
1. CD 55 [Option ID = 86744]
2. CD 51 [Option ID = 86746]
3. CD 15 [Option ID = 86747]
4. CD 155 [Option ID = 86745]
Correct Answer :-
CD 155 [Option ID = 86745]
Endotoxic shock produced by gram negative bacteremia is characterized by:
[Question ID = 51693]
1. Loss of large volumes of blood from host [Option ID = 86765]
2. Extensive internal haemorrhage in the organs of the host [Option ID = 86764]
3. Disseminated intravascular coagulation in the host [Option ID = 86766]
4. Release of minimal amount of cytokines in the host [Option ID = 86767]
Correct Answer :-
Disseminated intravascular coagulation in the host [Option ID = 86766]
Interferon free direct acting antivirals (DAAs) therapy has revolutionized treatment for which virus infection in recent years?
[Question ID = 51715]
1. Human papilloma virus [Option ID = 86855]
2. Hepatitis C virus [Option ID = 86854]
3. Chickenpox virus [Option ID = 86852]
4. Human Immunodeficiency virus [Option ID = 86853]
Correct Answer :-
Hepatitis C virus [Option ID = 86854]
A transmembrane protein that mediates the adhesion of cells to the extracellular matrix is: [Question ID = 51692]
1. Fibronectin [Option ID = 86761]
2. Laminin [Option ID = 86760]
3. Entactin [Option ID = 86763]
4. Integrin [Option ID = 86762]
Correct Answer :-
Integrin [Option ID = 86762]
Degranulation of most cells during hypersensitivity type I is known to produce: [Question ID = 51681]
1. Histamine, serotonin and leukotrienes [Option ID = 86718]
2. Histamine alone [Option ID = 86716]
3. Histamine, epinephrine and nor-epinephrine [Option ID = 86719]
4. Only Histamine and serotonin [Option ID = 86717]
Correct Answer :-
Histamine, serotonin and leukotrienes [Option ID = 86718]
Thiosulphate citrate bile salt sugar (TCBS) medium is used for selective isolation of:
[Question ID = 51685]
1. Non-cholera Vibrios only [Option ID = 86732]
2. Non-01 non-0139 Vibrio cholerae [Option ID = 86735]
3. Most Vibrios [Option ID = 86733]
4. Mostly Vibrio parahemolyticus [Option ID = 86734]
Correct Answer :-
Most Vibrios [Option ID = 86733]
Howard Walter Florey and Ernst Boris Chain were given the Nobel Prize for the process development of: [Question ID = 51752]
52)
53)
54)
55)
56)
57)
58)
1. Monoclonal antibodies [Option ID = 87000]
2. Penicillin [Option ID = 87001]
3. Erythromycin [Option ID = 87002]
4. Glutamic acid [Option ID = 87003]
Correct Answer :-
Penicillin [Option ID = 87001]
A type of cell adhesion molecule that recognizes oligosaccharides exposed on the cell surface: [Question ID = 51710]
1. Exportins [Option ID = 86834]
2. Integrins [Option ID = 86835]
3. Laminins [Option ID = 86832]
4. Selectins [Option ID = 86833]
Correct Answer :-
Selectins [Option ID = 86833]
The method of post-transcriptional gene silencing is particularly useful in: [Question ID = 51753]
1. Animals [Option ID = 87004]
2. Microbes [Option ID = 87007]
3. Plants [Option ID = 87005]
4. Insects [Option ID = 87006]
Correct Answer :-
Plants [Option ID = 87005]
When B DNA is slightly dehydrated, it acquires: [Question ID = 51733]
1. Z conformation [Option ID = 86926]
2. Positive supercoils [Option ID = 86925]
3. A conformation [Option ID = 86927]
4. Negative supercoils [Option ID = 86924]
Correct Answer :-
A conformation [Option ID = 86927]
The Toll-like receptor (TLR) which is known to bind the lipopolysaccharide (LPS) of gram negative bacteria: [Question ID = 51677]
1. TLR-4 [Option ID = 86702]
2. TLR-2 [Option ID = 86701]
3. TLR-1 [Option ID = 86700]
4. TLR-10 [Option ID = 86703]
Correct Answer :-
TLR-4 [Option ID = 86702]
Which of the following skin disinfectant(s) is/are used frequently? [Question ID = 51703]
1. Isopropyl alcohol [Option ID = 86804]
2. Ethyl alcohol [Option ID = 86805]
3. Both of the above [Option ID = 86806]
4. None of the these [Option ID = 86807]
Correct Answer :-
Both of the above [Option ID = 86806]
Which of the following statements is not true? [Question ID = 51672]
1. Linkers are often used as cloning aids when making cDNA libraries [Option ID = 86682]
2. cDNA libraries made in lambda phage vectors are screened by colony hybridization. [Option ID = 86683]
3. To obtain single stranded DNA of a target sequence we clone the sequence into a phagemid [Option ID = 86681]
4. When cloning large genomic contigs into YACs we may get chimeric inserts [Option ID = 86680]
Correct Answer :-
cDNA libraries made in lambda phage vectors are screened by colony hybridization. [Option ID = 86683]
Which of the following has beads on a string structure? [Question ID = 51674]
59)
60)
61)
62)
63)
64)
65)
1. Chromatin [Option ID = 86689]
2. Chromosomes [Option ID = 86688]
3. Heterochromatin [Option ID = 86691]
4. Nucleosomes [Option ID = 86690]
Correct Answer :-
Nucleosomes [Option ID = 86690]
Which of the following is NOT a feature of eukaryotic gene expression? [Question ID = 51764]
1. Multiple copies of nuclear genes and pseudogenes can occur [Option ID = 87051]
2. RNA synthesis and protein synthesis are coupled [Option ID = 87050]
3. Many genes are interrupted by noncoding DNA sequences [Option ID = 87049]
4. Polycistronic mRNAs are very rare [Option ID = 87048]
Correct Answer :-
RNA synthesis and protein synthesis are coupled [Option ID = 87050]
Which of the following is the best explanation of lock and key theory of enzyme action? [Question ID = 51697]
1. Enzyme determines the direction of reaction [Option ID = 86780]
2. Enzyme interacts with substrate and lowers activation energy of the reaction [Option ID = 86783]
3. Enzyme speeds up reaction as it comes in contact with reactants [Option ID = 86781]
4. Compounds similar in structure to substrate inhibit enzyme activity [Option ID = 86782]
Correct Answer :-
Compounds similar in structure to substrate inhibit enzyme activity [Option ID = 86782]
Which of the following is not an A-B type of toxin? [Question ID = 51763]
1. Diphtheria toxin [Option ID = 87044]
2. Tetanus toxin [Option ID = 87046]
3. Pertussis toxin [Option ID = 87047]
4. Cholera toxin [Option ID = 87045]
Correct Answer :-
Tetanus toxin [Option ID = 87046]
Which of the following methods are used for enzyme immobilization? [Question ID = 51759]
1. All of the these [Option ID = 87031]
2. Covalent binding [Option ID = 87030]
3. Adsorption [Option ID = 87028]
4. Affinity binding [Option ID = 87029]
Correct Answer :-
All of the these [Option ID = 87031]
Which of the following is responsible for unusual resistance of bacterial spores to heat? [Question ID = 51766]
1. Polylysine [Option ID = 87056]
2. Dipicolinic acid [Option ID = 87057]
3. Mycolic acid [Option ID = 87058]
4. NAM-NAG [Option ID = 87059]
Correct Answer :-
Dipicolinic acid [Option ID = 87057]
Which of the following is not true of RNA synthesis (transcription)? [Question ID = 51739]
1. In transcription, U is inserted opposite T [Option ID = 86950]
2. RNA polymerase needs a primer to initiate transcription [Option ID = 86949]
3. New nucleotides are added on to the 3' OH of the ribose sugar [Option ID = 86951]
4. RNA synthesis is always in the 5' - 3' direction. [Option ID = 86948]
Correct Answer :-
RNA polymerase needs a primer to initiate transcription [Option ID = 86949]
Pathogen associated molecular patterns (PAMP) are detected by: [Question ID = 51722]
66)
67)
68)
69)
70)
71)
1. B cell receptors [Option ID = 86882]
2. Non-leucine rich receptors [Option ID = 86883]
3. Toll-like receptors [Option ID = 86880]
4. T cell receptors [Option ID = 86881]
Correct Answer :-
Toll-like receptors [Option ID = 86880]
Examples of epimers are: [Question ID = 51714]
1. Both a and c [Option ID = 86851]
2. Glucose and galactose [Option ID = 86848]
3. Glucose and mannose [Option ID = 86850]
4. Glucose and fructose [Option ID = 86849]
Correct Answer :-
Both a and c [Option ID = 86851]
In 1961, Tim Loeb and Norton Zinder discovered these as the result of their search for phages whose replication depends on E. coli F-
pili which is used for bacterial conjugation
[Question ID = 51678]
1. Bacteriophage Lambda [Option ID = 86706]
2. Bacteriophage T7 [Option ID = 86705]
3. RNA coliphage [Option ID = 86704]
4. PhiX174 [Option ID = 86707]
Correct Answer :-
RNA coliphage [Option ID = 86704]
The most abundant type of RNA in the cells is: [Question ID = 51731]
1. rRNA [Option ID = 86916]
2. tRNA [Option ID = 86917]
3. mRNA [Option ID = 86918]
4. hnRNA [Option ID = 86919]
Correct Answer :-
rRNA [Option ID = 86916]
Expression of which of the early genes of Lambda phage leads to the replication of its DNA? [Question ID = 51676]
1. O and P [Option ID = 86696]
2. P and Q [Option ID = 86697]
3. O, P and Q [Option ID = 86699]
4. O and Q [Option ID = 86698]
Correct Answer :-
O and P [Option ID = 86696]
The 3, 5-Dinitrosalicylic acid is used for the estimation of: [Question ID = 51747]
1. Phenols [Option ID = 86983]
2. Amino acids [Option ID = 86981]
3. Starch [Option ID = 86980]
4. Reducing sugars [Option ID = 86982]
Correct Answer :-
Reducing sugars [Option ID = 86982]
You have isolated glucose oxidase which catalyses glucose oxidation and exhibits 50% V
max
at 0.05 M glucose. If you want to
increase the reaction rate to 90% then what concentration of glucose you should use in the reaction?
[Question ID = 51694]
1. 1M [Option ID = 86768]
2. 0.45 M [Option ID = 86769]
3. 0.30 M [Option ID = 86770]
72)
73)
74)
75)
76)
77)
4. 0.40 M [Option ID = 86771]
Correct Answer :-
0.45 M [Option ID = 86769]
Which of the following is not used in the pulping process of paper making? [Question ID = 51767]
1. Kraft process [Option ID = 87060]
2. Chlorite treatment [Option ID = 87063]
3. Bioleaching process [Option ID = 87062]
4. Sulfite process [Option ID = 87061]
Correct Answer :-
Bioleaching process [Option ID = 87062]
Which among these kinds of viruses do not exist? [Question ID = 51702]
1. Helical non-enveloped plant viruses [Option ID = 86800]
2. Helical enveloped animal viruses [Option ID = 86803]
3. Helical non-enveloped animal viruses [Option ID = 86802]
4. Icosahedral plant viruses [Option ID = 86801]
Correct Answer :-
Helical non-enveloped animal viruses [Option ID = 86802]
Which one is not a subviral agent? [Question ID = 51684]
1. Viroid [Option ID = 86728]
2. Virusoid [Option ID = 86730]
3. Prion [Option ID = 86731]
4. Mimivirus [Option ID = 86729]
Correct Answer :-
Mimivirus [Option ID = 86729]
Ames Test uses Salmonella typhimurium mutants to screen chemical agents that might be carcinogenic. The rationale behind this test
is:
[Question ID = 51746]
1. DNA repair in bacteria is inefficient [Option ID = 86979]
2. most carcinogenic agents are mutagenic [Option ID = 86977]
3. the rate of spontaneous mutations in bacteria is much higher than in eukaryotes [Option ID = 86978]
4. mutations in bacteria result in auxotrophy [Option ID = 86976]
Correct Answer :-
most carcinogenic agents are mutagenic [Option ID = 86977]
Brandy is a distilled form of: [Question ID = 51730]
1. Wine [Option ID = 86915]
2. Whisky [Option ID = 86913]
3. Beer [Option ID = 86912]
4. Vodka [Option ID = 86914]
Correct Answer :-
Wine [Option ID = 86915]
A CSTR process where only feed rate is used to control the specific growth rate is called:
[Question ID = 51745]
1. Turbidostat [Option ID = 86974]
2. DOstat [Option ID = 86975]
3. Retentostat [Option ID = 86973]
4. Chemostat [Option ID = 86972]
Correct Answer :-
Chemostat [Option ID = 86972]
78)
79)
80)
81)
82)
83)
84)
An automated machine which is used for rapid (90 minutes) identification of Mycobacterium tuberculosis in the clinical sample:
[Question ID = 51711]
1. Gene Expert [Option ID = 86837]
2. BATAC [Option ID = 86836]
3. Vitek-2 [Option ID = 86838]
4. Microscan by Siemens [Option ID = 86839]
Correct Answer :-
Gene Expert [Option ID = 86837]
An antimicrobial agent which was a very common constituent of several toiletries but has recently been banned:
[Question ID = 51695]
1. Hexachlorophene [Option ID = 86773]
2. Ketoconazole [Option ID = 86775]
3. Iodine [Option ID = 86772]
4. Triclosan [Option ID = 86774]
Correct Answer :-
Triclosan [Option ID = 86774]
An autosomal dominant disorder caused due to the expansion of trinucleotide repeats is [Question ID = 51680]
1. Klinefelter syndrome [Option ID = 86713]
2. Huntington disease [Option ID = 86712]
3. Alzheimer disease [Option ID = 86715]
4. Creutzfeldt-Jakob disease [Option ID = 86714]
Correct Answer :-
Huntington disease [Option ID = 86712]
Type II modification methylases methylate DNA at: [Question ID = 51683]
1. Cytosine and guanine [Option ID = 86727]
2. Adenine and thymine [Option ID = 86726]
3. Cytosine and adenine [Option ID = 86725]
4. Adenine and guanine [Option ID = 86724]
Correct Answer :-
Cytosine and adenine [Option ID = 86725]
The nucleotides in RNA are joined by: [Question ID = 51718]
1. 3?-5? phosphodiester bond [Option ID = 86864]
2. 3?-3? phosphodiester bond [Option ID = 86866]
3. 5?-3? phosphodiester bond [Option ID = 86865]
4. 5?-5? phosphodiester bond [Option ID = 86867]
Correct Answer :-
3?-5? phosphodiester bond [Option ID = 86864]
In prokaryotes, the first amino acid in the polypeptide chain is: [Question ID = 51741]
1. Can be any amino acid [Option ID = 86959]
2. N-methyl methionine [Option ID = 86957]
3. Methionine [Option ID = 86956]
4. N-formyl methionine [Option ID = 86958]
Correct Answer :-
N-formyl methionine [Option ID = 86958]
You were asked to electrophorese a sample of hyper-immune serum using agarose gel electrophoresis at pH-8.6. Which would be the
fastest moving fraction? [Question ID = 51701]
1. Fibrinogen [Option ID = 86799]
85)
86)
87)
88)
89)
90)
2. Albumin [Option ID = 86797]
3. ?-globulin [Option ID = 86798]
4. ?-globulin [Option ID = 86796]
Correct Answer :-
Albumin [Option ID = 86797]
To identify the promoter motif to which a transcription factor binds we can use: [Question ID = 51704]
1. DNA sequencing [Option ID = 86810]
2. DNA footprinting [Option ID = 86809]
3. DNA barcoding [Option ID = 86811]
4. DNA fingerprinting [Option ID = 86808]
Correct Answer :-
DNA footprinting [Option ID = 86809]
Iodine used in Gram-staining serves as a: [Question ID = 51737]
1. Catalyst [Option ID = 86941]
2. Chelator [Option ID = 86940]
3. Mordant [Option ID = 86942]
4. Co-factor [Option ID = 86943]
Correct Answer :-
Mordant [Option ID = 86942]
Long acting thyroid stimulating (LATS) molecule are: [Question ID = 51709]
1. Antibodies to thyroid stimulating hormone (TSH) [Option ID = 86828]
2. Antibodies to thyroxine [Option ID = 86830]
3. Antibodies to TSH receptors [Option ID = 86829]
4. Antibodies to triidothyronine [Option ID = 86831]
Correct Answer :-
Antibodies to TSH receptors [Option ID = 86829]
In genetic engineering, in vitro packaging is used for:
[Question ID = 51751]
1. cloning a gene of size 2-4 kb into a plasmid and then incubating with packaging extracts to transform bacteria [Option ID = 86999]
2. cloning large genomic contigs into BACs and then incubating with packaging extracts to transform bacteria with the BAC clones. [Option ID = 86996]
3. Incorporating recombinant DNA into infectious bacteriophage particles. [Option ID = 86998]
4. Translating proteins using rabbit reticulocyte lysates. [Option ID = 86997]
Correct Answer :-
Incorporating recombinant DNA into infectious bacteriophage particles. [Option ID = 86998]
In a bioreactor, impellers increase the surface area of:
[Question ID = 51744]
1. Substrates [Option ID = 86970]
2. Cells [Option ID = 86968]
3. All of the these [Option ID = 86971]
4. Air bubbles [Option ID = 86969]
Correct Answer :-
Air bubbles [Option ID = 86969]
Which one of these is not an obligatory intracellular parasite?
[Question ID = 51671]
1. Rickettsia rickettsii [Option ID = 86676]
2. Chlamydia suis [Option ID = 86677]
3. Rhodococcus equi [Option ID = 86678]
4. Mycobacterium leprae [Option ID = 86679]
91)
92)
93)
94)
95)
96)
Correct Answer :-
Rhodococcus equi [Option ID = 86678]
Which of these is a cancer associated virus belonging to gammaherpesvirus subfamily of Herpesviridae family?
[Question ID = 51690]
1. Human herpesvirus 3 [Option ID = 86754]
2. Human herpesvirus 1 [Option ID = 86752]
3. Human herpesvirus 2 [Option ID = 86753]
4. Human herpesvirus 4 [Option ID = 86755]
Correct Answer :-
Human herpesvirus 4 [Option ID = 86755]
Which of the following is true of the genus Rickettsia?
[Question ID = 51749]
1. All of the these [Option ID = 86991]
2. They are evolutionary similar to chloroplast [Option ID = 86990]
3. They primarily use glycolysis for oxidation of glucose [Option ID = 86989]
4. They are all parasitic or mutualistic [Option ID = 86988]
Correct Answer :-
All of the these [Option ID = 86991]
Which of the following indicates that pK of an acid is numerically equal to pH of the solution when the molar concentration of acid
and its conjugate base are equal?
[Question ID = 51708]
1. Michaelis-Menten equation [Option ID = 86824]
2. Hardy Weinberg law [Option ID = 86826]
3. Henderson-Hasselbalch equation [Option ID = 86827]
4. Haldanes equation [Option ID = 86825]
Correct Answer :-
Henderson-Hasselbalch equation [Option ID = 86827]
Which of the following methods is used for microbial cell disruption?
[Question ID = 51742]
1. Solid Shear method [Option ID = 86961]
2. All of the these [Option ID = 86963]
3. Freeze-thawing methods [Option ID = 86962]
4. Liquid shear Method [Option ID = 86960]
Correct Answer :-
All of the these [Option ID = 86963]
Which of the following is not a cause of food poisoning?
[Question ID = 51754]
1. Clostridium perfringens [Option ID = 87010]
2. Salmonella typhi [Option ID = 87009]
3. Bacillus cereus [Option ID = 87008]
4. Staphylococcus aureus [Option ID = 87011]
Correct Answer :-
Salmonella typhi [Option ID = 87009]
Which of the following bacteria is called the super bug that could clean up oil spills?
[Question ID = 51673]
FirstRanker.com - FirstRanker's Choice
1)
2)
3)
4)
5)
6)
DU MSc Microbiology
Topic:- DU_J18_MSC_MICRO
Sanger?s method of sequencing is: [Question ID = 51724]
1. Sequencing by chain synthesis [Option ID = 86888]
2. Sequencing by chain cleavage [Option ID = 86890]
3. Sequencing by chain termination [Option ID = 86889]
4. Sequencing by chain ligation [Option ID = 86891]
Correct Answer :-
Sequencing by chain termination [Option ID = 86889]
What is the hydrogen ion concentration in moles/L, if pH of a solution is 3.0?
[Question ID = 51740]
1. 1 x 10
-3
[Option ID = 86954]
2. 4 x 10
-3
[Option ID = 86955]
3. 3 x 10
-3
[Option ID = 86953]
4. 3 [Option ID = 86952]
Correct Answer :-
1 x 10
-3
[Option ID = 86954]
A taxonomic system which takes into consideration a large number of phenotypic and genotypic characteristics of the organism is
called: [Question ID = 51757]
1. Numerical taxonomy [Option ID = 87021]
2. Molecular taxonomy [Option ID = 87022]
3. Phylogenetics [Option ID = 87020]
4. Phylogenomics [Option ID = 87023]
Correct Answer :-
Numerical taxonomy [Option ID = 87021]
The cytokine which is most commonly used for proliferation of bone marrow cells in vitro:
[Question ID = 51768]
1. TGF-? [Option ID = 87066]
2. GM-CSF [Option ID = 87064]
3. IFN-? [Option ID = 87065]
4. IL-2 [Option ID = 87067]
Correct Answer :-
GM-CSF [Option ID = 87064]
The interaction of two proteins within a cell can be visualized by:
[Question ID = 51689]
1. All of the above [Option ID = 86751]
2. Biomolecules with fluorescence complementation [Option ID = 86749]
3. Fluorescence recovery effectively transferred [Option ID = 86748]
4. Fluorescence resonance energy transfer [Option ID = 86750]
Correct Answer :-
Fluorescence resonance energy transfer [Option ID = 86750]
The arrangement in which flagella are distributed all around the bacterial cell is known as:
7)
8)
9)
10)
11)
[Question ID = 51727]
1. Amphitrichous [Option ID = 86901]
2. Peritrichous [Option ID = 86902]
3. Monotrichous [Option ID = 86903]
4. Lophotrichous [Option ID = 86900]
Correct Answer :-
Peritrichous [Option ID = 86902]
The dried female flowers of Humulus lupulus are used in the production of:
[Question ID = 51725]
1. Wine [Option ID = 86893]
2. Bread [Option ID = 86892]
3. Beer [Option ID = 86894]
4. Tofu [Option ID = 86895]
Correct Answer :-
Beer [Option ID = 86894]
The Swiss cheese ripening process is done using:
[Question ID = 51738]
1. Geotrichium candidum [Option ID = 86947]
2. Penicillium roqueforti [Option ID = 86945]
3. Penicillium camemberti [Option ID = 86944]
4. Propionibacterium sp. [Option ID = 86946]
Correct Answer :-
Propionibacterium sp. [Option ID = 86946]
The culture media containing heat labile constituents are best sterilized by:
[Question ID = 51687]
1. UV-irradiation [Option ID = 86743]
2. Filtration using membrane filter [Option ID = 86742]
3. Dry heat at 180
o
C for 30 min [Option ID = 86740]
4. Autoclaving at 15 psi for 30 min [Option ID = 86741]
Correct Answer :-
Filtration using membrane filter [Option ID = 86742]
The koji for miso is a culture of:
[Question ID = 51736]
1. Aspergillus oryzae [Option ID = 86937]
2. Aspergillus lentulus [Option ID = 86939]
3. Aspergillus flavus [Option ID = 86936]
4. Aspergillus fumigatus [Option ID = 86938]
Correct Answer :-
Aspergillus oryzae [Option ID = 86937]
Klinefelter syndrome is characterized by: [Question ID = 51712]
1. chromosome 19 trisomy [Option ID = 86841]
2. chromosome 21 monosomy [Option ID = 86843]
3. one or more extra X chromosomes [Option ID = 86840]
4. fragile X chromosome [Option ID = 86842]
Correct Answer :-
one or more extra X chromosomes [Option ID = 86840]
12)
13)
14)
15)
16)
17)
18)
Peptidoglycan is also known as: [Question ID = 51732]
1. N-acetyl glucosamine [Option ID = 86922]
2. N-acetyl muramic acid [Option ID = 86920]
3. Murein mucopeptide [Option ID = 86921]
4. Mesodiaminopimelic acid [Option ID = 86923]
Correct Answer :-
Murein mucopeptide [Option ID = 86921]
All of the following are sporicidal except: [Question ID = 51706]
1. Formaldehyde [Option ID = 86818]
2. Glutaraldehyde [Option ID = 86816]
3. Ethylene oxide [Option ID = 86817]
4. Alcohol [Option ID = 86819]
Correct Answer :-
Alcohol [Option ID = 86819]
The time required to kill 90% of the micro-organisms in a sample at a specific temperature is the [Question ID = 51698]
1. Decimal reduction time [Option ID = 86785]
2. Log reduction [Option ID = 86786]
3. Thermal inactivation constant [Option ID = 86787]
4. Thermal death point [Option ID = 86784]
Correct Answer :-
Decimal reduction time [Option ID = 86785]
The new antigens which appear on the tumors produced by irradiation are called: [Question ID = 51705]
1. Tumor-specific transplantation antigens (TSTA) [Option ID = 86813]
2. Carcino-embryonic antigens [Option ID = 86814]
3. Tumor associated antigens (TAA) [Option ID = 86812]
4. Tumor infiltrating antigens [Option ID = 86815]
Correct Answer :-
Tumor-specific transplantation antigens (TSTA) [Option ID = 86813]
Thermoduric bacteria are majorly found in:
[Question ID = 51729]
1. Pasteurized milk and dried milk [Option ID = 86909]
2. Ice-creams [Option ID = 86908]
3. None of the these [Option ID = 86911]
4. Vegetables [Option ID = 86910]
Correct Answer :-
Pasteurized milk and dried milk [Option ID = 86909]
The phenomenon in which the severity of symptoms in genetic disorders increases from generation to generation is called: [Question
ID = 51699]
1. Genetic drift [Option ID = 86788]
2. Genetic anticipation [Option ID = 86789]
3. Genetic polymorphism [Option ID = 86791]
4. Genetic erosion [Option ID = 86790]
Correct Answer :-
Genetic anticipation [Option ID = 86789]
Deviation in Hardy-Weinberg equilibrium in a population would be caused by [Question ID = 51720]
1. Small population size [Option ID = 86875]
2. Lack of mutation [Option ID = 86874]
3. Lack of selection [Option ID = 86873]
4. Random mating [Option ID = 86872]
19)
20)
21)
22)
23)
24)
25)
Correct Answer :-
Small population size [Option ID = 86875]
If the specific growth rate of the microorganism is 0.25 h-1, find out it?s doubling time? [Question ID = 51750]
1. 1.77 h [Option ID = 86992]
2. 2.77 h [Option ID = 86993]
3. 4.77 h [Option ID = 86995]
4. 3.77 h [Option ID = 86994]
Correct Answer :-
2.77 h [Option ID = 86993]
A polymerase that extends DNA chains in template-independent manner is: [Question ID = 51726]
1. Klenow [Option ID = 86897]
2. DNA pol I [Option ID = 86896]
3. Terminal deoxynucleotidyl transferase [Option ID = 86898]
4. Pfu DNA polymerase [Option ID = 86899]
Correct Answer :-
Terminal deoxynucleotidyl transferase [Option ID = 86898]
The Pathogenicity Islands (PAI) which are responsible for emergence of new pathogens are part of: [Question ID = 51696]
1. Integral part of integrons [Option ID = 86778]
2. Core genome of bacteria [Option ID = 86776]
3. Part of plasmids [Option ID = 86779]
4. Flexible genome pool of bacteria [Option ID = 86777]
Correct Answer :-
Core genome of bacteria [Option ID = 86776]
Universal primers used in Sanger?s sequencing of plasmid DNA are: [Question ID = 51769]
1. primers complementary to the vector sequences flanking the multiple cloning site [Option ID = 87071]
2. primers complementary to the antibiotic resistance gene of the vector [Option ID = 87069]
3. primers complementary to the multiple cloning sequence of the vector [Option ID = 87070]
4. primers of random sequence of length 18 nucleotides [Option ID = 87068]
Correct Answer :-
primers complementary to the vector sequences flanking the multiple cloning site [Option ID = 87071]
In 2011, which virus was declared by OIE to be eradicated from earth after successful culmination of global vaccination and
monitoring program for that virus?
[Question ID = 51700]
1. Rinderpest virus [Option ID = 86794]
2. Sheeppox virus [Option ID = 86793]
3. Smallpox virus [Option ID = 86792]
4. Peste-des-petits ruminants virus [Option ID = 86795]
Correct Answer :-
Rinderpest virus [Option ID = 86794]
In the latent state, Herpes simplex virus makes an 8.3 kilobase RNA transcript called: [Question ID = 51682]
1. LMT or latent membrane transcript [Option ID = 86722]
2. None of the above [Option ID = 86723]
3. LAT or latency associated transcript [Option ID = 86720]
4. LANA or latency associated nuclear antigen [Option ID = 86721]
Correct Answer :-
LAT or latency associated transcript [Option ID = 86720]
Variegation in four o?clock plants is an example of:
26)
27)
28)
29)
30)
31)
[Question ID = 51743]
1. Maternal effect [Option ID = 86964]
2. Nuclear inheritance [Option ID = 86966]
3. Organelle heredity [Option ID = 86965]
4. None of the these [Option ID = 86967]
Correct Answer :-
Organelle heredity [Option ID = 86965]
Tetracycline blocks protein synthesis by: [Question ID = 51762]
1. Inhibiting translocase enzyme [Option ID = 87043]
2. Inhibiting peptidyl transferase [Option ID = 87042]
3. Inhibiting binding of aminoacyl tRNA to ribosomes [Option ID = 87040]
4. Inhibiting initiation of translation [Option ID = 87041]
Correct Answer :-
Inhibiting binding of aminoacyl tRNA to ribosomes [Option ID = 87040]
Winogradsky column is often used for the isolation of:
[Question ID = 51734]
1. Escherichia spp. [Option ID = 86930]
2. Pyrolobus spp. [Option ID = 86931]
3. Desulfovibrio spp. [Option ID = 86928]
4. Sulfolobus spp. [Option ID = 86929]
Correct Answer :-
Desulfovibrio spp. [Option ID = 86928]
What are the end products of Entner-Doudoroff pathway? [Question ID = 51713]
1. Pyruvate [Option ID = 86846]
2. Acetaldehyde, pyruvate and CO2 [Option ID = 86847]
3. Acetaldehyde and pyruvate [Option ID = 86845]
4. Ethanol and pyruvate [Option ID = 86844]
Correct Answer :-
Ethanol and pyruvate [Option ID = 86844]
Flagella move the cell by: [Question ID = 51723]
1. An individual flagellum beating in a whip-like motion [Option ID = 86886]
2. Attaching to nearby particles and contracting [Option ID = 86885]
3. Spinning like a propeller [Option ID = 86884]
4. Many flagella beating in a synchronous whip-like motion [Option ID = 86887]
Correct Answer :-
Spinning like a propeller [Option ID = 86884]
Use of microbes for the break down or removal of toxic wastes in water and soil is called as: [Question ID = 51765]
1. Putrefaction [Option ID = 87053]
2. Recycling [Option ID = 87055]
3. Bioremediation [Option ID = 87054]
4. Decomposition [Option ID = 87052]
Correct Answer :-
Bioremediation [Option ID = 87054]
Leucine rich repeats (LRR) are an integral part of which immunological receptor? [Question ID = 51679]
1. Dendritic cell receptor [Option ID = 86710]
2. Toll-like receptor (TLR) [Option ID = 86708]
3. T cell receptor (TCR) [Option ID = 86711]
4. NK cell receptor [Option ID = 86709]
Correct Answer :-
32)
33)
34)
35)
36)
37)
38)
Toll-like receptor (TLR) [Option ID = 86708]
Chondroid of some bacteria are better known as:
[Question ID = 51755]
1. Bacterial plasmids [Option ID = 87014]
2. Bacterial plastids [Option ID = 87013]
3. Bacterial mitochondria [Option ID = 87015]
4. Mesosomes [Option ID = 87012]
Correct Answer :-
Mesosomes [Option ID = 87012]
A condition in which a single mutation causes multiple phenotypic effects is: [Question ID = 51675]
1. Multiphenotypy [Option ID = 86695]
2. Pleiotropy [Option ID = 86692]
3. Epigenesis [Option ID = 86694]
4. Epistasis [Option ID = 86693]
Correct Answer :-
Pleiotropy [Option ID = 86692]
The blood samples of athletes can be tested for the presence of certain performance enhancing drugs using: [Question ID = 51686]
1. Real time PCRs [Option ID = 86738]
2. Microarrays [Option ID = 86737]
3. Mass spectrometry [Option ID = 86736]
4. Fluorescence spectroscopy [Option ID = 86739]
Correct Answer :-
Mass spectrometry [Option ID = 86736]
Cork screw shaped forms of bacteria are [Question ID = 51721]
1. Stalked bacteria [Option ID = 86877]
2. Bacilli [Option ID = 86876]
3. Spirochaetes [Option ID = 86878]
4. Actinomycetes [Option ID = 86879]
Correct Answer :-
Spirochaetes [Option ID = 86878]
How many molecules of carbon dioxide are released after five rounds of Krebs cycle? [Question ID = 51719]
1. 18 [Option ID = 86871]
2. 12 [Option ID = 86870]
3. 10 [Option ID = 86869]
4. 6 [Option ID = 86868]
Correct Answer :-
10 [Option ID = 86869]
The atomizer is used in the following process: [Question ID = 51756]
1. Liquid-liquid extraction [Option ID = 87017]
2. None of the these [Option ID = 87019]
3. Cross flow filtration [Option ID = 87018]
4. Spray drying [Option ID = 87016]
Correct Answer :-
Spray drying [Option ID = 87016]
The process of nonreciprocal recombination by which one allele in a heterozygote is converted into the corresponding allele is called:
[Question ID = 51707]
1. Gene targeting [Option ID = 86820]
2. Gene knockout [Option ID = 86821]
39)
40)
41)
42)
43)
44)
3. Gene amplification [Option ID = 86823]
4. Gene conversion [Option ID = 86822]
Correct Answer :-
Gene conversion [Option ID = 86822]
The process of RNA inactivation by siRNAs is termed as: [Question ID = 51758]
1. RNA dysfunction [Option ID = 87027]
2. RNA silencing [Option ID = 87024]
3. RNA interference [Option ID = 87025]
4. Short RNA inactivation [Option ID = 87026]
Correct Answer :-
RNA interference [Option ID = 87025]
The production of high-fructose corn syrup (HFCS) from glucose involves which of the following enzymes? [Question ID = 51760]
1. Hexokinase [Option ID = 87035]
2. Invertase [Option ID = 87034]
3. Glucose isomerase [Option ID = 87032]
4. Glucose oxidase [Option ID = 87033]
Correct Answer :-
Glucose isomerase [Option ID = 87032]
This food-borne pathogen is very well known to grow even at refrigeration temperature:
[Question ID = 51691]
1. Salmonella enteritidis [Option ID = 86759]
2. Bacillus subtilis [Option ID = 86756]
3. Listeria monocytogenes [Option ID = 86757]
4. Vibrio cholerae [Option ID = 86758]
Correct Answer :-
Listeria monocytogenes [Option ID = 86757]
The term ecosystem was coined by: [Question ID = 51761]
1. Winogradsky [Option ID = 87036]
2. Pasteur [Option ID = 87039]
3. Flor [Option ID = 87038]
4. Tansley [Option ID = 87037]
Correct Answer :-
Tansley [Option ID = 87037]
In lactic acid fermentation the final electron acceptor is:
[Question ID = 51735]
1. Acetyl CoA [Option ID = 86934]
2. NAD
+
[Option ID = 86932]
3. Pyruvate [Option ID = 86933]
4. Glucose [Option ID = 86935]
Correct Answer :-
Pyruvate [Option ID = 86933]
Trickling filters are used in the following process [Question ID = 51770]
1. Waste water treatment [Option ID = 87072]
2. Protein recovery from biomass [Option ID = 87074]
3. Milk pasteurization [Option ID = 87073]
4. All of the these [Option ID = 87075]
Correct Answer :-
Waste water treatment [Option ID = 87072]
45)
46)
47)
48)
49)
50)
51)
The polio virus receptor which is an integral membrane protein is a member of immunoglobulin superfamily of proteins, and also is
involved in establishment of intercellular junctions between epithelial cells: [Question ID = 51688]
1. CD 55 [Option ID = 86744]
2. CD 51 [Option ID = 86746]
3. CD 15 [Option ID = 86747]
4. CD 155 [Option ID = 86745]
Correct Answer :-
CD 155 [Option ID = 86745]
Endotoxic shock produced by gram negative bacteremia is characterized by:
[Question ID = 51693]
1. Loss of large volumes of blood from host [Option ID = 86765]
2. Extensive internal haemorrhage in the organs of the host [Option ID = 86764]
3. Disseminated intravascular coagulation in the host [Option ID = 86766]
4. Release of minimal amount of cytokines in the host [Option ID = 86767]
Correct Answer :-
Disseminated intravascular coagulation in the host [Option ID = 86766]
Interferon free direct acting antivirals (DAAs) therapy has revolutionized treatment for which virus infection in recent years?
[Question ID = 51715]
1. Human papilloma virus [Option ID = 86855]
2. Hepatitis C virus [Option ID = 86854]
3. Chickenpox virus [Option ID = 86852]
4. Human Immunodeficiency virus [Option ID = 86853]
Correct Answer :-
Hepatitis C virus [Option ID = 86854]
A transmembrane protein that mediates the adhesion of cells to the extracellular matrix is: [Question ID = 51692]
1. Fibronectin [Option ID = 86761]
2. Laminin [Option ID = 86760]
3. Entactin [Option ID = 86763]
4. Integrin [Option ID = 86762]
Correct Answer :-
Integrin [Option ID = 86762]
Degranulation of most cells during hypersensitivity type I is known to produce: [Question ID = 51681]
1. Histamine, serotonin and leukotrienes [Option ID = 86718]
2. Histamine alone [Option ID = 86716]
3. Histamine, epinephrine and nor-epinephrine [Option ID = 86719]
4. Only Histamine and serotonin [Option ID = 86717]
Correct Answer :-
Histamine, serotonin and leukotrienes [Option ID = 86718]
Thiosulphate citrate bile salt sugar (TCBS) medium is used for selective isolation of:
[Question ID = 51685]
1. Non-cholera Vibrios only [Option ID = 86732]
2. Non-01 non-0139 Vibrio cholerae [Option ID = 86735]
3. Most Vibrios [Option ID = 86733]
4. Mostly Vibrio parahemolyticus [Option ID = 86734]
Correct Answer :-
Most Vibrios [Option ID = 86733]
Howard Walter Florey and Ernst Boris Chain were given the Nobel Prize for the process development of: [Question ID = 51752]
52)
53)
54)
55)
56)
57)
58)
1. Monoclonal antibodies [Option ID = 87000]
2. Penicillin [Option ID = 87001]
3. Erythromycin [Option ID = 87002]
4. Glutamic acid [Option ID = 87003]
Correct Answer :-
Penicillin [Option ID = 87001]
A type of cell adhesion molecule that recognizes oligosaccharides exposed on the cell surface: [Question ID = 51710]
1. Exportins [Option ID = 86834]
2. Integrins [Option ID = 86835]
3. Laminins [Option ID = 86832]
4. Selectins [Option ID = 86833]
Correct Answer :-
Selectins [Option ID = 86833]
The method of post-transcriptional gene silencing is particularly useful in: [Question ID = 51753]
1. Animals [Option ID = 87004]
2. Microbes [Option ID = 87007]
3. Plants [Option ID = 87005]
4. Insects [Option ID = 87006]
Correct Answer :-
Plants [Option ID = 87005]
When B DNA is slightly dehydrated, it acquires: [Question ID = 51733]
1. Z conformation [Option ID = 86926]
2. Positive supercoils [Option ID = 86925]
3. A conformation [Option ID = 86927]
4. Negative supercoils [Option ID = 86924]
Correct Answer :-
A conformation [Option ID = 86927]
The Toll-like receptor (TLR) which is known to bind the lipopolysaccharide (LPS) of gram negative bacteria: [Question ID = 51677]
1. TLR-4 [Option ID = 86702]
2. TLR-2 [Option ID = 86701]
3. TLR-1 [Option ID = 86700]
4. TLR-10 [Option ID = 86703]
Correct Answer :-
TLR-4 [Option ID = 86702]
Which of the following skin disinfectant(s) is/are used frequently? [Question ID = 51703]
1. Isopropyl alcohol [Option ID = 86804]
2. Ethyl alcohol [Option ID = 86805]
3. Both of the above [Option ID = 86806]
4. None of the these [Option ID = 86807]
Correct Answer :-
Both of the above [Option ID = 86806]
Which of the following statements is not true? [Question ID = 51672]
1. Linkers are often used as cloning aids when making cDNA libraries [Option ID = 86682]
2. cDNA libraries made in lambda phage vectors are screened by colony hybridization. [Option ID = 86683]
3. To obtain single stranded DNA of a target sequence we clone the sequence into a phagemid [Option ID = 86681]
4. When cloning large genomic contigs into YACs we may get chimeric inserts [Option ID = 86680]
Correct Answer :-
cDNA libraries made in lambda phage vectors are screened by colony hybridization. [Option ID = 86683]
Which of the following has beads on a string structure? [Question ID = 51674]
59)
60)
61)
62)
63)
64)
65)
1. Chromatin [Option ID = 86689]
2. Chromosomes [Option ID = 86688]
3. Heterochromatin [Option ID = 86691]
4. Nucleosomes [Option ID = 86690]
Correct Answer :-
Nucleosomes [Option ID = 86690]
Which of the following is NOT a feature of eukaryotic gene expression? [Question ID = 51764]
1. Multiple copies of nuclear genes and pseudogenes can occur [Option ID = 87051]
2. RNA synthesis and protein synthesis are coupled [Option ID = 87050]
3. Many genes are interrupted by noncoding DNA sequences [Option ID = 87049]
4. Polycistronic mRNAs are very rare [Option ID = 87048]
Correct Answer :-
RNA synthesis and protein synthesis are coupled [Option ID = 87050]
Which of the following is the best explanation of lock and key theory of enzyme action? [Question ID = 51697]
1. Enzyme determines the direction of reaction [Option ID = 86780]
2. Enzyme interacts with substrate and lowers activation energy of the reaction [Option ID = 86783]
3. Enzyme speeds up reaction as it comes in contact with reactants [Option ID = 86781]
4. Compounds similar in structure to substrate inhibit enzyme activity [Option ID = 86782]
Correct Answer :-
Compounds similar in structure to substrate inhibit enzyme activity [Option ID = 86782]
Which of the following is not an A-B type of toxin? [Question ID = 51763]
1. Diphtheria toxin [Option ID = 87044]
2. Tetanus toxin [Option ID = 87046]
3. Pertussis toxin [Option ID = 87047]
4. Cholera toxin [Option ID = 87045]
Correct Answer :-
Tetanus toxin [Option ID = 87046]
Which of the following methods are used for enzyme immobilization? [Question ID = 51759]
1. All of the these [Option ID = 87031]
2. Covalent binding [Option ID = 87030]
3. Adsorption [Option ID = 87028]
4. Affinity binding [Option ID = 87029]
Correct Answer :-
All of the these [Option ID = 87031]
Which of the following is responsible for unusual resistance of bacterial spores to heat? [Question ID = 51766]
1. Polylysine [Option ID = 87056]
2. Dipicolinic acid [Option ID = 87057]
3. Mycolic acid [Option ID = 87058]
4. NAM-NAG [Option ID = 87059]
Correct Answer :-
Dipicolinic acid [Option ID = 87057]
Which of the following is not true of RNA synthesis (transcription)? [Question ID = 51739]
1. In transcription, U is inserted opposite T [Option ID = 86950]
2. RNA polymerase needs a primer to initiate transcription [Option ID = 86949]
3. New nucleotides are added on to the 3' OH of the ribose sugar [Option ID = 86951]
4. RNA synthesis is always in the 5' - 3' direction. [Option ID = 86948]
Correct Answer :-
RNA polymerase needs a primer to initiate transcription [Option ID = 86949]
Pathogen associated molecular patterns (PAMP) are detected by: [Question ID = 51722]
66)
67)
68)
69)
70)
71)
1. B cell receptors [Option ID = 86882]
2. Non-leucine rich receptors [Option ID = 86883]
3. Toll-like receptors [Option ID = 86880]
4. T cell receptors [Option ID = 86881]
Correct Answer :-
Toll-like receptors [Option ID = 86880]
Examples of epimers are: [Question ID = 51714]
1. Both a and c [Option ID = 86851]
2. Glucose and galactose [Option ID = 86848]
3. Glucose and mannose [Option ID = 86850]
4. Glucose and fructose [Option ID = 86849]
Correct Answer :-
Both a and c [Option ID = 86851]
In 1961, Tim Loeb and Norton Zinder discovered these as the result of their search for phages whose replication depends on E. coli F-
pili which is used for bacterial conjugation
[Question ID = 51678]
1. Bacteriophage Lambda [Option ID = 86706]
2. Bacteriophage T7 [Option ID = 86705]
3. RNA coliphage [Option ID = 86704]
4. PhiX174 [Option ID = 86707]
Correct Answer :-
RNA coliphage [Option ID = 86704]
The most abundant type of RNA in the cells is: [Question ID = 51731]
1. rRNA [Option ID = 86916]
2. tRNA [Option ID = 86917]
3. mRNA [Option ID = 86918]
4. hnRNA [Option ID = 86919]
Correct Answer :-
rRNA [Option ID = 86916]
Expression of which of the early genes of Lambda phage leads to the replication of its DNA? [Question ID = 51676]
1. O and P [Option ID = 86696]
2. P and Q [Option ID = 86697]
3. O, P and Q [Option ID = 86699]
4. O and Q [Option ID = 86698]
Correct Answer :-
O and P [Option ID = 86696]
The 3, 5-Dinitrosalicylic acid is used for the estimation of: [Question ID = 51747]
1. Phenols [Option ID = 86983]
2. Amino acids [Option ID = 86981]
3. Starch [Option ID = 86980]
4. Reducing sugars [Option ID = 86982]
Correct Answer :-
Reducing sugars [Option ID = 86982]
You have isolated glucose oxidase which catalyses glucose oxidation and exhibits 50% V
max
at 0.05 M glucose. If you want to
increase the reaction rate to 90% then what concentration of glucose you should use in the reaction?
[Question ID = 51694]
1. 1M [Option ID = 86768]
2. 0.45 M [Option ID = 86769]
3. 0.30 M [Option ID = 86770]
72)
73)
74)
75)
76)
77)
4. 0.40 M [Option ID = 86771]
Correct Answer :-
0.45 M [Option ID = 86769]
Which of the following is not used in the pulping process of paper making? [Question ID = 51767]
1. Kraft process [Option ID = 87060]
2. Chlorite treatment [Option ID = 87063]
3. Bioleaching process [Option ID = 87062]
4. Sulfite process [Option ID = 87061]
Correct Answer :-
Bioleaching process [Option ID = 87062]
Which among these kinds of viruses do not exist? [Question ID = 51702]
1. Helical non-enveloped plant viruses [Option ID = 86800]
2. Helical enveloped animal viruses [Option ID = 86803]
3. Helical non-enveloped animal viruses [Option ID = 86802]
4. Icosahedral plant viruses [Option ID = 86801]
Correct Answer :-
Helical non-enveloped animal viruses [Option ID = 86802]
Which one is not a subviral agent? [Question ID = 51684]
1. Viroid [Option ID = 86728]
2. Virusoid [Option ID = 86730]
3. Prion [Option ID = 86731]
4. Mimivirus [Option ID = 86729]
Correct Answer :-
Mimivirus [Option ID = 86729]
Ames Test uses Salmonella typhimurium mutants to screen chemical agents that might be carcinogenic. The rationale behind this test
is:
[Question ID = 51746]
1. DNA repair in bacteria is inefficient [Option ID = 86979]
2. most carcinogenic agents are mutagenic [Option ID = 86977]
3. the rate of spontaneous mutations in bacteria is much higher than in eukaryotes [Option ID = 86978]
4. mutations in bacteria result in auxotrophy [Option ID = 86976]
Correct Answer :-
most carcinogenic agents are mutagenic [Option ID = 86977]
Brandy is a distilled form of: [Question ID = 51730]
1. Wine [Option ID = 86915]
2. Whisky [Option ID = 86913]
3. Beer [Option ID = 86912]
4. Vodka [Option ID = 86914]
Correct Answer :-
Wine [Option ID = 86915]
A CSTR process where only feed rate is used to control the specific growth rate is called:
[Question ID = 51745]
1. Turbidostat [Option ID = 86974]
2. DOstat [Option ID = 86975]
3. Retentostat [Option ID = 86973]
4. Chemostat [Option ID = 86972]
Correct Answer :-
Chemostat [Option ID = 86972]
78)
79)
80)
81)
82)
83)
84)
An automated machine which is used for rapid (90 minutes) identification of Mycobacterium tuberculosis in the clinical sample:
[Question ID = 51711]
1. Gene Expert [Option ID = 86837]
2. BATAC [Option ID = 86836]
3. Vitek-2 [Option ID = 86838]
4. Microscan by Siemens [Option ID = 86839]
Correct Answer :-
Gene Expert [Option ID = 86837]
An antimicrobial agent which was a very common constituent of several toiletries but has recently been banned:
[Question ID = 51695]
1. Hexachlorophene [Option ID = 86773]
2. Ketoconazole [Option ID = 86775]
3. Iodine [Option ID = 86772]
4. Triclosan [Option ID = 86774]
Correct Answer :-
Triclosan [Option ID = 86774]
An autosomal dominant disorder caused due to the expansion of trinucleotide repeats is [Question ID = 51680]
1. Klinefelter syndrome [Option ID = 86713]
2. Huntington disease [Option ID = 86712]
3. Alzheimer disease [Option ID = 86715]
4. Creutzfeldt-Jakob disease [Option ID = 86714]
Correct Answer :-
Huntington disease [Option ID = 86712]
Type II modification methylases methylate DNA at: [Question ID = 51683]
1. Cytosine and guanine [Option ID = 86727]
2. Adenine and thymine [Option ID = 86726]
3. Cytosine and adenine [Option ID = 86725]
4. Adenine and guanine [Option ID = 86724]
Correct Answer :-
Cytosine and adenine [Option ID = 86725]
The nucleotides in RNA are joined by: [Question ID = 51718]
1. 3?-5? phosphodiester bond [Option ID = 86864]
2. 3?-3? phosphodiester bond [Option ID = 86866]
3. 5?-3? phosphodiester bond [Option ID = 86865]
4. 5?-5? phosphodiester bond [Option ID = 86867]
Correct Answer :-
3?-5? phosphodiester bond [Option ID = 86864]
In prokaryotes, the first amino acid in the polypeptide chain is: [Question ID = 51741]
1. Can be any amino acid [Option ID = 86959]
2. N-methyl methionine [Option ID = 86957]
3. Methionine [Option ID = 86956]
4. N-formyl methionine [Option ID = 86958]
Correct Answer :-
N-formyl methionine [Option ID = 86958]
You were asked to electrophorese a sample of hyper-immune serum using agarose gel electrophoresis at pH-8.6. Which would be the
fastest moving fraction? [Question ID = 51701]
1. Fibrinogen [Option ID = 86799]
85)
86)
87)
88)
89)
90)
2. Albumin [Option ID = 86797]
3. ?-globulin [Option ID = 86798]
4. ?-globulin [Option ID = 86796]
Correct Answer :-
Albumin [Option ID = 86797]
To identify the promoter motif to which a transcription factor binds we can use: [Question ID = 51704]
1. DNA sequencing [Option ID = 86810]
2. DNA footprinting [Option ID = 86809]
3. DNA barcoding [Option ID = 86811]
4. DNA fingerprinting [Option ID = 86808]
Correct Answer :-
DNA footprinting [Option ID = 86809]
Iodine used in Gram-staining serves as a: [Question ID = 51737]
1. Catalyst [Option ID = 86941]
2. Chelator [Option ID = 86940]
3. Mordant [Option ID = 86942]
4. Co-factor [Option ID = 86943]
Correct Answer :-
Mordant [Option ID = 86942]
Long acting thyroid stimulating (LATS) molecule are: [Question ID = 51709]
1. Antibodies to thyroid stimulating hormone (TSH) [Option ID = 86828]
2. Antibodies to thyroxine [Option ID = 86830]
3. Antibodies to TSH receptors [Option ID = 86829]
4. Antibodies to triidothyronine [Option ID = 86831]
Correct Answer :-
Antibodies to TSH receptors [Option ID = 86829]
In genetic engineering, in vitro packaging is used for:
[Question ID = 51751]
1. cloning a gene of size 2-4 kb into a plasmid and then incubating with packaging extracts to transform bacteria [Option ID = 86999]
2. cloning large genomic contigs into BACs and then incubating with packaging extracts to transform bacteria with the BAC clones. [Option ID = 86996]
3. Incorporating recombinant DNA into infectious bacteriophage particles. [Option ID = 86998]
4. Translating proteins using rabbit reticulocyte lysates. [Option ID = 86997]
Correct Answer :-
Incorporating recombinant DNA into infectious bacteriophage particles. [Option ID = 86998]
In a bioreactor, impellers increase the surface area of:
[Question ID = 51744]
1. Substrates [Option ID = 86970]
2. Cells [Option ID = 86968]
3. All of the these [Option ID = 86971]
4. Air bubbles [Option ID = 86969]
Correct Answer :-
Air bubbles [Option ID = 86969]
Which one of these is not an obligatory intracellular parasite?
[Question ID = 51671]
1. Rickettsia rickettsii [Option ID = 86676]
2. Chlamydia suis [Option ID = 86677]
3. Rhodococcus equi [Option ID = 86678]
4. Mycobacterium leprae [Option ID = 86679]
91)
92)
93)
94)
95)
96)
Correct Answer :-
Rhodococcus equi [Option ID = 86678]
Which of these is a cancer associated virus belonging to gammaherpesvirus subfamily of Herpesviridae family?
[Question ID = 51690]
1. Human herpesvirus 3 [Option ID = 86754]
2. Human herpesvirus 1 [Option ID = 86752]
3. Human herpesvirus 2 [Option ID = 86753]
4. Human herpesvirus 4 [Option ID = 86755]
Correct Answer :-
Human herpesvirus 4 [Option ID = 86755]
Which of the following is true of the genus Rickettsia?
[Question ID = 51749]
1. All of the these [Option ID = 86991]
2. They are evolutionary similar to chloroplast [Option ID = 86990]
3. They primarily use glycolysis for oxidation of glucose [Option ID = 86989]
4. They are all parasitic or mutualistic [Option ID = 86988]
Correct Answer :-
All of the these [Option ID = 86991]
Which of the following indicates that pK of an acid is numerically equal to pH of the solution when the molar concentration of acid
and its conjugate base are equal?
[Question ID = 51708]
1. Michaelis-Menten equation [Option ID = 86824]
2. Hardy Weinberg law [Option ID = 86826]
3. Henderson-Hasselbalch equation [Option ID = 86827]
4. Haldanes equation [Option ID = 86825]
Correct Answer :-
Henderson-Hasselbalch equation [Option ID = 86827]
Which of the following methods is used for microbial cell disruption?
[Question ID = 51742]
1. Solid Shear method [Option ID = 86961]
2. All of the these [Option ID = 86963]
3. Freeze-thawing methods [Option ID = 86962]
4. Liquid shear Method [Option ID = 86960]
Correct Answer :-
All of the these [Option ID = 86963]
Which of the following is not a cause of food poisoning?
[Question ID = 51754]
1. Clostridium perfringens [Option ID = 87010]
2. Salmonella typhi [Option ID = 87009]
3. Bacillus cereus [Option ID = 87008]
4. Staphylococcus aureus [Option ID = 87011]
Correct Answer :-
Salmonella typhi [Option ID = 87009]
Which of the following bacteria is called the super bug that could clean up oil spills?
[Question ID = 51673]
97)
98)
99)
100)
1. Bacillus denitrificans [Option ID = 86687]
2. Pseudomonas putida [Option ID = 86684]
3. Pseudomonas aeruginosa [Option ID = 86685]
4. Thiobacillus denitrificans [Option ID = 86686]
Correct Answer :-
Pseudomonas putida [Option ID = 86684]
Which is not true of archaebacteria?
[Question ID = 51728]
1. Archaebacterial cell wall is made up of N-acetyl glucosamine and N-acetyl muramic acid [Option ID = 86906]
2. Archaebacterial cell wall is rich in ether lipids [Option ID = 86904]
3. Archaebacteria are insensitive to all major antibiotics [Option ID = 86905]
4. None of the these [Option ID = 86907]
Correct Answer :-
Archaebacterial cell wall is made up of N-acetyl glucosamine and N-acetyl muramic acid [Option ID = 86906]
Knallgas-bacteria are bacteria that oxidize [Question ID = 51748]
1. Sulphur [Option ID = 86987]
2. Nitrogen [Option ID = 86986]
3. Hydrogen [Option ID = 86985]
4. Iron [Option ID = 86984]
Correct Answer :-
Hydrogen [Option ID = 86985]
?/? T lymphocytes are located: [Question ID = 51716]
1. in thymus [Option ID = 86858]
2. in gut associated lymphatic tissue (GALT) [Option ID = 86856]
3. mainly in bone marrow [Option ID = 86857]
4. in spleen [Option ID = 86859]
Correct Answer :-
in gut associated lymphatic tissue (GALT) [Option ID = 86856]
The nonreciprocal interaction between non-allelic genes such that one gene influences the expression of another gene, leading to a
specific phenotype, is called: [Question ID = 51717]
1. Interference [Option ID = 86863]
2. Coincidence [Option ID = 86861]
3. Dominance [Option ID = 86860]
4. Epistasis [Option ID = 86862]
Correct Answer :-
Epistasis [Option ID = 86862]
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This post was last modified on 29 January 2020