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Delhi University Entrance Test (DUET) 2020 Previous Year Question Paper With Answer Key

DU MSc Plant Molecular Biology N Biotech
Topic: PMBB MSC S2
1) A bacterium, which loses its ability to synthesize one or more organic compounds, is called
[Question ID = 3089]
1. Heterotroph [Option ID = 12350]
2. Prototroph [Option ID = 12351]
3. Auxotroph [Option ID = 12352]
4. Autotroph [Option ID = 12353]
Correct Answer :
Auxotroph [Option ID = 12352]
2) Bacterial recombination, mediated by bacteriophages, is called
[Question ID = 3090]
1. Conjugation [Option ID = 12354]
2. Transformation [Option ID = 12355]
3. Transduction [Option ID = 12356]
4. Segregation [Option ID = 12357]
Correct Answer :
Transduction [Option ID = 12356]
3) Complementation analysis using bacteriophages was performed by
[Question ID = 3091]
1. Joshua Lederberg [Option ID = 12358]
2. Seymour Benzer [Option ID = 12359]
3. Jacques Monod [Option ID = 12360]
4. Alfred Hershey [Option ID = 12361]
Correct Answer :
Seymour Benzer [Option ID = 12359]
4) During translation initiation, bacterial ribosomal subunits bind to mRNA at the
[Question ID = 3092]
1. AUG codon [Option ID = 12362]
2. First intron [Option ID = 12363]
3. TATA box [Option ID = 12364]
4. ShineDelgarno sequence [Option ID = 12365]
Correct Answer :
ShineDelgarno sequence [Option ID = 12365]
5) The lac operon can be induced by
[Question ID = 3093]
1. Xgal
[Option ID = 12366]
2. NADP
[Option ID = 12367]
3. ATP
[Option ID = 12368]
4. IPTG
[Option ID = 12369]
Correct Answer :
IPTG
[Option ID = 12369]
6) Trp repressor controls an operon which encodes genes responsible for
[Question ID = 3094]
1. Conversion of tryptophan to phenylalanine [Option ID = 12370]
2. Conversion of phenylalanine to tryptophan [Option ID = 12371]
3. Degradation of tryptophan [Option ID = 12372]
4. Biosynthesis of tryptophan [Option ID = 12373]
Correct Answer :

---

Biosynthesis of tryptophan [Option ID = 12373]
7) The modified base wyosine is found in
[Question ID = 3095]
1. tRNA [Option ID = 12374]
2. siRNA [Option ID = 12375]
3. rRNA [Option ID = 12376]
4. mRNA [Option ID = 12377]
Correct Answer :
tRNA [Option ID = 12374]
8) Rust disease of wheat is caused by a
[Question ID = 3096]
1. Virus [Option ID = 12378]
2. Bacterium [Option ID = 12379]
3. Nematode [Option ID = 12380]
4. Fungus [Option ID = 12381]
Correct Answer :
Fungus [Option ID = 12381]
9) Upon pathogen attack, some plants exhibit a reaction known as Hypersensitive Response (HR), which involves
[Question ID = 3097]
1. Rapid multiplication of infected cells [Option ID = 12382]
2. Dedifferentiation of the affected tissue [Option ID = 12383]
3. Increased vasculature in the infected region [Option ID = 12384]
4. Rapid localized cell death [Option ID = 12385]
Correct Answer :
Rapid localized cell death [Option ID = 12385]
10) Which hormone is responsible for the "Witch's broom" disease?
[Question ID = 3098]
1. Cytokinin [Option ID = 12386]
2. ABA [Option ID = 12387]
3. Gibberellin [Option ID = 12388]
4. Ethylene [Option ID = 12389]
Correct Answer :
Cytokinin [Option ID = 12386]
11) Precursor for ethylene biosynthesis is
[Question ID = 3099]
1. Tryptophan [Option ID = 12390]
2. Methionine [Option ID = 12391]
3. Arginine [Option ID = 12392]
4. Ornithine [Option ID = 12393]
Correct Answer :
Methionine [Option ID = 12391]
12) Which feature of the following is characteristic of a monocot embryo?
[Question ID = 3100]
1. Asymmetric division of the embryo [Option ID = 12394]
2. Octant stage [Option ID = 12395]
3. Establishment of bilateral asymmetry [Option ID = 12396]
4. Lateral differentiation of the SAM [Option ID = 12397]
Correct Answer :
Lateral differentiation of the SAM [Option ID = 12397]
13) Seeds of which of the following plants are nonendospermic?
[Question ID = 3101]
1. Custard apple [Option ID = 12398]
2. Orchid [Option ID = 12399]
3. Wheat [Option ID = 12400]
4. Mango [Option ID = 12401]
Correct Answer :
Orchid [Option ID = 12399]
14) Amygdalin, a wellknown cyanogenic glycoside, is isolated from
[Question ID = 3102]

---

1. Linseed [Option ID = 12402]
2. Bean [Option ID = 12403]
3. Cassava [Option ID = 12404]
4. Bitter almond [Option ID = 12405]
Correct Answer :
Bitter almond [Option ID = 12405]
15) Which of the following photoreceptors in plants exists in two photointerconvertible forms?
[Question ID = 3103]
1. Cryptochrome [Option ID = 12406]
2. Phytochrome [Option ID = 12407]
3. Phototropin [Option ID = 12408]
4. ?carotene [Option ID = 12409]
Correct Answer :
Phytochrome [Option ID = 12407]
16) Which of the following enzymes plays a role in lightinduced stomatal opening?
[Question ID = 3104]
1. K ATPase
+
[Option ID = 12410]
2. Na ATPase
+
[Option ID = 12411]
3. Ca ATPase
2+
[Option ID = 12412]
4. H ATPase
+
[Option ID = 12413]
Correct Answer :
H ATPase
+
[Option ID = 12413]
17) Exposure of DNA to ultraviolet light commonly leads to
[Question ID = 3105]
1. Formation of thymine dimers [Option ID = 12414]
2. Formation of adenine dimers [Option ID = 12415]
3. Adenine to thymine conversion [Option ID = 12416]
4. Thymine to adenine conversion [Option ID = 12417]
Correct Answer :
Formation of thymine dimers [Option ID = 12414]
18) Movements in a compound leaf of leguminous plants occur due to ionic changes in
[Question ID = 3106]
1. Petiole [Option ID = 12418]
2. Pinnules [Option ID = 12419]
3. Pulvinus [Option ID = 12420]
4. Bundle sheath cells [Option ID = 12421]
Correct Answer :
Pulvinus [Option ID = 12420]
19) Which of the following hormones is involved in vivipary?
[Question ID = 3107]
1. Abscisic acid [Option ID = 12422]
2. Jasmonic acid [Option ID = 12423]
3. Cytokinin [Option ID = 12424]
4. Ethylene [Option ID = 12425]
Correct Answer :
Abscisic acid [Option ID = 12422]
20) In a germinating seed of barley, gibberellin is synthesized in the
[Question ID = 3108]
1. Endosperm [Option ID = 12426]
2. Embyronic axis [Option ID = 12427]
3. Seed coat [Option ID = 12428]
4. Aleurone layer [Option ID = 12429]
Correct Answer :
Embyronic axis [Option ID = 12427]
21) The `AcidGrowth Hypothesis' for auxin action was proposed by
[Question ID = 3109]
1. F.W. Went and K.V. Thimann [Option ID = 12430]
2. D. Rayle and R. Cleland [Option ID = 12431]
3. C. Hamner and J.D. Bonner [Option ID = 12432]
4. S.B. Hendricks and H. Borthwick [Option ID = 12433]

---

Correct Answer :
D. Rayle and R. Cleland [Option ID = 12431]
22) The most common precursor of the plant hormone, IAA, is
[Question ID = 3110]
1. Methionine [Option ID = 12434]
2. Phenyalanine [Option ID = 12435]
3. Tyrosine [Option ID = 12436]
4. Tryptophan [Option ID = 12437]
Correct Answer :
Tryptophan [Option ID = 12437]
23) During embryo development in plants, PIN proteins are primarily involved in
[Question ID = 3111]
1. Regulating cell division [Option ID = 12438]
2. Regulating cell elongation [Option ID = 12439]
3. Regulation of gene expression [Option ID = 12440]
4. Establishment of auxin gradient [Option ID = 12441]
Correct Answer :
Establishment of auxin gradient [Option ID = 12441]
24) Which of the following processes is NOT carried out mainly by mitochondria?
[Question ID = 3112]
1. Biosynthesis of cardiolipin [Option ID = 12442]
2. Biosynthesis of fatty acids [Option ID = 12443]
3. Catabolism of amino acids [Option ID = 12444]
4. Generation of reactive oxygen species [Option ID = 12445]
Correct Answer :
Biosynthesis of fatty acids [Option ID = 12443]
25) Which of the following molecules CANNOT serve as a terminal electron acceptor in bacterial electrontransport chain?
[Question ID = 3113]
1. Oxygen [Option ID = 12446]
2. Sulfate [Option ID = 12447]
3. Fumarate [Option ID = 12448]
4. Magnesium [Option ID = 12449]
Correct Answer :
Magnesium [Option ID = 12449]
26) Which of the following is NOT universally encoded by the mitochondrial DNA?
[Question ID = 3114]
1. Small ribosomal RNA [Option ID = 12450]
2. Large ribosomal RNA [Option ID = 12451]
3. A cytochrome oxidase subunit [Option ID = 12452]
4. Transfer RNA [Option ID = 12453]
Correct Answer :
Transfer RNA [Option ID = 12453]
27) Which of the following cytoskeletal filaments are abundant in an animal cell nucleus?
[Question ID = 3115]
1. Microfilaments [Option ID = 12454]
2. Microtubules [Option ID = 12455]
3. Lamins [Option ID = 12456]
4. Spectrin filaments [Option ID = 12457]
Correct Answer :
Lamins [Option ID = 12456]
28) Consider the structure of a sarcomere. Which of its features DOES NOT shorten during skeletal muscle contraction?
[Question ID = 3116]
1. The dark band [Option ID = 12458]
2. The light band [Option ID = 12459]
3. The distance from the Mline to the Zdisc [Option ID = 12460]
4. The distance between two consecutive Zdiscs [Option ID = 12461]
Correct Answer :
The dark band [Option ID = 12458]
29) Which is the most common polymer present in the plant secondary cell wall but not the primary cell wall?

---

[Question ID = 3117]
1. Cellulose [Option ID = 12462]
2. Pectin [Option ID = 12463]
3. Lignin [Option ID = 12464]
4. Starch [Option ID = 12465]
Correct Answer :
Lignin [Option ID = 12464]
30) Which of the following statement is true for increasing the resolution of electron microscope?
[Question ID = 3118]
1. Electromagnetic lenses determine the resolution [Option ID = 12466]
2. Wavelength of electron beam determines the resolution [Option ID = 12467]
3. Thickness of specimen determines the resolution [Option ID = 12468]
4. Electron dense region in the specimen determines the resolution [Option ID = 12469]
Correct Answer :
Wavelength of electron beam determines the resolution [Option ID = 12467]
31) In a diploid organism, Law of Segregation results in
[Question ID = 3119]
1. Separation of alleles [Option ID = 12470]
2. Separation of genes on one chromosome [Option ID = 12471]
3. Segregation of individuals [Option ID = 12472]
4. Segregation of male and female gametes [Option ID = 12473]
Correct Answer :
Separation of alleles [Option ID = 12470]
32) Plant protoplasts are
[Question ID = 3120]
1. Precursors of amyloplasts [Option ID = 12474]
2. Plant cells without cell walls [Option ID = 12475]
3. Primitive cells [Option ID = 12476]
4. Cytoplasm without plasma membrane [Option ID = 12477]
Correct Answer :
Plant cells without cell walls [Option ID = 12475]
33) Which of the following scientists discovered mobile genetic elements?
[Question ID = 3121]
1. S. Tonegawa [Option ID = 12478]
2. S. Brenner [Option ID = 12479]
3. B. McClintock [Option ID = 12480]
4. L.B. Buck [Option ID = 12481]
Correct Answer :
B. McClintock [Option ID = 12480]
34) Transferred DNA from Tiplasmid is maintained in a transgenic plant as
[Question ID = 3122]
1. An independent linear replicon [Option ID = 12482]
2. An independent circular replicon [Option ID = 12483]
3. Integrated DNA in chromosome [Option ID = 12484]
4. Multiple independent copies of introduced DNA [Option ID = 12485]
Correct Answer :
Integrated DNA in chromosome [Option ID = 12484]
35) Metabolomics is primarily the study of the
[Question ID = 3123]
1. Entire suite of metabolites [Option ID = 12486]
2. Metabolism [Option ID = 12487]
3. Proteins involved in metabolism [Option ID = 12488]
4. Enzymes [Option ID = 12489]
Correct Answer :
Entire suite of metabolites [Option ID = 12486]
36) Dideoxynucleotide lacks
[Question ID = 3124]
1. 3'OH [Option ID = 12490]
2. 2'OH [Option ID = 12491]
3. Phosphate group [Option ID = 12492]
4. 3'OH and 2'OH [Option ID = 12493]

---

Correct Answer :
3'OH and 2'OH [Option ID = 12493]
37) Which of the following is a selectable marker gene?
[Question ID = 3125]
1. Gfp
[Option ID = 12494]
2. Luciferase
[Option ID = 12495]
3. gus
[Option ID = 12496]
4. nptII
[Option ID = 12497]
Correct Answer :
nptII
[Option ID = 12497]
38) A plant cell contains circular DNA in
[Question ID = 3126]
1. One organelle [Option ID = 12498]
2. Two organelles [Option ID = 12499]
3. Three organelles [Option ID = 12500]
4. Four organelles [Option ID = 12501]
Correct Answer :
Two organelles [Option ID = 12499]
39) cDNA is synthesized by
[Question ID = 3127]
1. RNA polymerase I [Option ID = 12502]
2. RNA polymerase II [Option ID = 12503]
3. RNA polymerase III [Option ID = 12504]
4. Reverse transcriptase [Option ID = 12505]
Correct Answer :
Reverse transcriptase [Option ID = 12505]
40) Northern hybridization is related to
[Question ID = 3128]
1. Detection of DNA [Option ID = 12506]
2. Detection of RNA [Option ID = 12507]
3. Detection of protein [Option ID = 12508]
4. Detection of DNA and RNA [Option ID = 12509]
Correct Answer :
Detection of RNA [Option ID = 12507]
41) Introns are present at the level of
[Question ID = 3129]
1. Genomic DNA [Option ID = 12510]
2. cDNA [Option ID = 12511]
3. mRNA [Option ID = 12512]
4. Protein [Option ID = 12513]
Correct Answer :
Genomic DNA [Option ID = 12510]
42) Which of the following scientists was given Nobel Prize for discovery of restriction enzymes?
[Question ID = 3130]
1. P. Berg [Option ID = 12514]
2. A. Klug [Option ID = 12515]
3. W. Arber [Option ID = 12516]
4. F. Sanger [Option ID = 12517]
Correct Answer :
W. Arber [Option ID = 12516]
43) Which of the following plants is useful for cancer therapy?

---

[Question ID = 3131]
1. Datura stramonium
[Option ID = 12518]
2. Dioscorea deltoidea
[Option ID = 12519]
3. Taxus brevifolia
[Option ID = 12520]
4. Atropa belladonna
[Option ID = 12521]
Correct Answer :
Taxus brevifolia
[Option ID = 12520]
44) Which of the following plants is a commercial source of an artificial sweetener?
[Question ID = 3132]
1. Stevia rebaudiana
[Option ID = 12522]
2. Atropa belladonna
[Option ID = 12523]
3. Papaver somnifera
[Option ID = 12524]
4. Cinchona officinalis
[Option ID = 12525]
Correct Answer :
Stevia rebaudiana
[Option ID = 12522]
45) Which of the following biological systems is a predominant source of the `Luciferase' enzyme?
[Question ID = 3133]
1. Photinus pyralis
[Option ID = 12526]
2. Drosophila melanogaster
[Option ID = 12527]
3. Escherichia coli
[Option ID = 12528]
4. Saccharomyces cerevisiae
[Option ID = 12529]
Correct Answer :
Photinus pyralis
[Option ID = 12526]
46) Which of the following biological species is the predominant source of `Taq polymerase enzyme'?
[Question ID = 3134]
1. Thermus aquaticus
[Option ID = 12530]
2. Thermus antranikianii
[Option ID = 12531]
3. Thermus igniterrae
[Option ID = 12532]
4. Thermus tengchongensis
[Option ID = 12533]
Correct Answer :
Thermus aquaticus
[Option ID = 12530]
47) Who is credited for propounding the PCR technique?

---

[Question ID = 3135]
1. K. Mullis [Option ID = 12534]
2. A. Kornberg [Option ID = 12535]
3. M.W. Nirenberg [Option ID = 12536]
4. H.G. Khorana [Option ID = 12537]
Correct Answer :
K. Mullis [Option ID = 12534]
48) Which of the following scientists is credited for the "Green Revolution"?
[Question ID = 3136]
1. N. Borlaug [Option ID = 12538]
2. G. Haberlandt [Option ID = 12539]
3. G. Mendel [Option ID = 12540]
4. C. Darwin [Option ID = 12541]
Correct Answer :
N. Borlaug [Option ID = 12538]
49) IR8 is a popular variety of
[Question ID = 3137]
1. Wheat [Option ID = 12542]
2. Rice [Option ID = 12543]
3. Maize [Option ID = 12544]
4. Cotton [Option ID = 12545]
Correct Answer :
Rice [Option ID = 12543]
50) The golden colour of `Golden rice' is due to excess levels of
[Question ID = 3138]
1. Xanthophyll [Option ID = 12546]
2. Carotene [Option ID = 12547]
3. Phycoerythrin [Option ID = 12548]
4. Bilirubin [Option ID = 12549]
Correct Answer :
Carotene [Option ID = 12547]
51) RFLP analysis is a technique that
[Question ID = 3139]
1. Uses hybridization to detect specific DNA restriction fragments in genomics DNA [Option ID = 12550]
2. Measures the transfer frequency of genes during conjugation [Option ID = 12551]
3. Is used to detect genetic variation at the protein level [Option ID = 12552]
4. Is used to amplify genes for producing useful products [Option ID = 12553]
Correct Answer :
Uses hybridization to detect specific DNA restriction fragments in genomics DNA [Option ID = 12550]
52) Plasmid cloning vectors
[Question ID = 3140]
1. Can generally accommodate larger inserts than phage vectors [Option ID = 12554]
2. Can replicate within bacteria [Option ID = 12555]
3. Can accommodate inserts of over 100 kilobases [Option ID = 12556]
4. Include centromeres to allow propagation in yeast. [Option ID = 12557]
Correct Answer :
Can replicate within bacteria [Option ID = 12555]
53) On an average, how many fragments would a restriction enzyme which recognizes a specific 4 base sequence in DNA
be expected to cleave a doublestranded bacteriophage with a genome size of 5,000 bp into ?
[Question ID = 3141]
1. About 2 [Option ID = 12558]
2. About 4 [Option ID = 12559]
3. About 20 [Option ID = 12560]
4. About 50 [Option ID = 12561]
Correct Answer :
About 20 [Option ID = 12560]
54) QTL analysis is used to
[Question ID = 3142]
1. Identify RNA polymerase binding sites [Option ID = 12562]
2. Determine which genes are expressed at a developmental stage [Option ID = 12563]
3. Identify chromosome regions associated with a quantitative trait [Option ID = 12564]

---

4. Determine the most rapidlyevolving parts of genes [Option ID = 12565]
Correct Answer :
Identify chromosome regions associated with a quantitative trait [Option ID = 12564]
55) Double fertilization involves
[Question ID = 3143]
1. Fertilization of the egg by two male gametes [Option ID = 12566]
2. Fertilization of two eggs in the same embryo sac by two sperms brought by one pollen tube [Option ID = 12567]
3. Fertilization of the egg and the central cell by two sperms brought by different pollen tubes [Option ID = 12568]
4. Fertilization of the egg and the central cell by two sperms brought by the same pollen tube [Option ID = 12569]
Correct Answer :
Fertilization of the egg and the central cell by two sperms brought by the same pollen tube [Option ID = 12569]
56) At which stage of development the male gametophyte is surrounded by a callose wall?
[Question ID = 3144]
1. Mature 3celled stage [Option ID = 12570]
2. Bicelled stage [Option ID = 12571]
3. Single cell stage [Option ID = 12572]
4. Pollen Mother Cell stage [Option ID = 12573]
Correct Answer :
Pollen Mother Cell stage [Option ID = 12573]
57) Which one of the following enzymes is substrate inducible?
[Question ID = 3145]
1. Triose phosphate isomerase [Option ID = 12574]
2. Glyceraldehyde phosphate dehydrogenase [Option ID = 12575]
3. Nitrate reductase [Option ID = 12576]
4. Hexose isomerase. [Option ID = 12577]
Correct Answer :
Nitrate reductase [Option ID = 12576]
58) The Lemma and Palea in cereal flowers are
[Question ID = 3146]
1. Modified sepals [Option ID = 12578]
2. Fused sepals and petals [Option ID = 12579]
3. Modified glumes [Option ID = 12580]
4. Nectaries [Option ID = 12581]
Correct Answer :
Modified glumes [Option ID = 12580]
59) Oxytocin is a
[Question ID = 3147]
1. Peptidal hormone [Option ID = 12582]
2. Steroidal hormone [Option ID = 12583]
3. Transcriptional factor [Option ID = 12584]
4. Hormonal receptor [Option ID = 12585]
Correct Answer :
Peptidal hormone [Option ID = 12582]
60) Which of the following is a zinc containing protein?
[Question ID = 3148]
1. Nitrogenase [Option ID = 12586]
2. Calmodulin [Option ID = 12587]
3. Nitrate reductase [Option ID = 12588]
4. Alcohol dehydrogenase [Option ID = 12589]
Correct Answer :
Alcohol dehydrogenase [Option ID = 12589]
61) Which of the following is a metalloprotein?
[Question ID = 3149]
1. Nitrogenase [Option ID = 12590]
2. Hexokinase [Option ID = 12591]
3. Triose phosphate isomerase [Option ID = 12592]
4. Desmosine [Option ID = 12593]
Correct Answer :
Nitrogenase [Option ID = 12590]

---

62) In sodium dodecyl sulphate structure which groups are found in multiples?
[Question ID = 3150]
1. Sodium [Option ID = 12594]
2. Sulphate [Option ID = 12595]
3. CH
2 [Option ID = 12596]
4. CH
3 [Option ID = 12597]
Correct Answer :
CH
2 [Option ID = 12596]
63) If photosynthesis is carried out in presence of CO carrying labelled oxygen,which molecules produced would not carry
2
radiolabel?
[Question ID = 3151]
1. 3phospho glyceraldehyde
[Option ID = 12598]
2. Ribulose 5 phosphate
[Option ID = 12599]
3. Sedoheptulose
[Option ID = 12600]
4. Oxygen
[Option ID = 12601]
Correct Answer :
Oxygen
[Option ID = 12601]
64) Which enzyme is involved in dissipation of energy in NADH as heat in plant mitochondria?
[Question ID = 3152]
1. Glycolate oxidase [Option ID = 12602]
2. Alternative oxidase [Option ID = 12603]
3. Succinate dehydrogenase [Option ID = 12604]
4. Cytochrome oxidase [Option ID = 12605]
Correct Answer :
Alternative oxidase [Option ID = 12603]
65) When intact mitochondria are disrupted by treatment with detergent, the resulting membrane fragments can still
catalyze electron transfer from succinate or NADH to O , without ATP production. What is the reason for this?
2
[Question ID = 3153]
1. Inhibition of ATP synthase [Option ID = 12606]
2. Lack of ADP [Option ID = 12607]
3. Lack of proton gradient [Option ID = 12608]
4. Inhibition of cytochrome oxidase by the detergent [Option ID = 12609]
Correct Answer :
Lack of proton gradient [Option ID = 12608]
66) Chemical uncoupler 2,4dinitrophenol (DNP) uncouples electron transport to ATP synthesis by
[Question ID = 3154]
1. Creating holes in mitochondrial membrane
[Option ID = 12610]
2. Inhibiting ATP synthase
[Option ID = 12611]
3. Inhibiting electron transport
[Option ID = 12612]
4. Disrupting proton gradient
[Option ID = 12613]
Correct Answer :
Disrupting proton gradient
[Option ID = 12613]
67) Thylakoid membranes of chloroplasts mainly contain
[Question ID = 3155]
1. Phospholipids [Option ID = 12614]
2. Galactolipids [Option ID = 12615]
3. Sphingolipids [Option ID = 12616]

---

4. Triacylglycerol [Option ID = 12617]
Correct Answer :
Galactolipids [Option ID = 12615]
68) On equal mass basis, complete oxidation of which of the following to CO and H
2
O would produce more energy?
2
[Question ID = 3156]
1. Diacylglycerol [Option ID = 12618]
2. Phosphatidic acid [Option ID = 12619]
3. Triacylglycerol [Option ID = 12620]
4. Starch [Option ID = 12621]
Correct Answer :
Triacylglycerol [Option ID = 12620]
69) The enzyme acetylCoA carboxylase contains which of the following cofactors?
[Question ID = 3157]
1. Thymine pyrophosphate [Option ID = 12622]
2. Molybdenum [Option ID = 12623]
3. Biotin [Option ID = 12624]
4. Zinc [Option ID = 12625]
Correct Answer :
Biotin [Option ID = 12624]
70) Which two cell organelles contain maximum amount of cellular lipid?
[Question ID = 3158]
1. Mitochondria and chloroplasts [Option ID = 12626]
2. Mitochondria and ER [Option ID = 12627]
3. Vacuoles and chloroplasts [Option ID = 12628]
4. Chloroplasts and ER [Option ID = 12629]
Correct Answer :
Chloroplasts and ER [Option ID = 12629]
71) Synthesis of glutamine, using glutamate and NH +
4 , catalysed by glutamine synthetase is an example of
[Question ID = 3159]
1. Transamination [Option ID = 12630]
2. Oxidative amination [Option ID = 12631]
3. Reductive amination [Option ID = 12632]
4. Denitrification [Option ID = 12633]
Correct Answer :
Reductive amination [Option ID = 12632]
72) Which enzyme is the target of common herbicide Basta?
[Question ID = 3160]
1. EPSP synthase [Option ID = 12634]
2. Glutamate dehydrogenase [Option ID = 12635]
3. Glutamine synthetase [Option ID = 12636]
4. Acetohydroxy acid synthase [Option ID = 12637]
Correct Answer :
Glutamine synthetase [Option ID = 12636]
73) Which of the following gene(s) involved in symbiotic nitrogen fixation in leguminous plants is of plant origin?
[Question ID = 3161]
1. nod D
[Option ID = 12638]
2. nol
[Option ID = 12639]
3. fixL
[Option ID = 12640]
4. ENOD
[Option ID = 12641]
Correct Answer :
ENOD
[Option ID = 12641]
74) In a plant transformation experiment, inclusion of antibiotic resistance gene expression cassette within TDNA of binary

---

vector is important for
[Question ID = 3162]
1. An efficient infectivity of Agrobacterium
[Option ID = 12642]
2. An efficient transfer of TDNA into plant genome
[Option ID = 12643]
3. Selection of putative transformants
[Option ID = 12644]
4. Protection of transformants from bacterial infection
[Option ID = 12645]
Correct Answer :
Selection of putative transformants
[Option ID = 12644]
75) Starch is a polymer of glucose with linkages of
[Question ID = 3163]
1. (16), (14) [Option ID = 12646]
2. (14), (16) [Option ID = 12647]
3. (14), (16) [Option ID = 12648]
4. (14), (16) [Option ID = 12649]
Correct Answer :
(14), (16) [Option ID = 12648]
76) A gene that has originated through duplication within a species and has acquired new function is known as
[Question ID = 3164]
1. Paralogous [Option ID = 12650]
2. Orthologous [Option ID = 12651]
3. Heterologous [Option ID = 12652]
4. Neologous [Option ID = 12653]
Correct Answer :
Paralogous [Option ID = 12650]
77) A yeast artificial chromosome (YAC) contains all the following except
[Question ID = 3165]
1. ARS [Option ID = 12654]
2. Telomeres [Option ID = 12655]
3. Centromere [Option ID = 12656]
4. Satellite DNA [Option ID = 12657]
Correct Answer :
Satellite DNA [Option ID = 12657]
78) Isoelectric point of a protein is the pH at which its overall charge is
[Question ID = 3166]
1. 0 [Option ID = 12658]
2. 2 [Option ID = 12659]
3. 2 [Option ID = 12660]
4. 1 [Option ID = 12661]
Correct Answer :
0 [Option ID = 12658]
79) Deamination of adenine results in the formation of
[Question ID = 3167]
1. Hypoxanthine [Option ID = 12662]
2. Uracil [Option ID = 12663]
3. Cytosine [Option ID = 12664]
4. Guanine [Option ID = 12665]
Correct Answer :
Hypoxanthine [Option ID = 12662]
80) Which of the following is a textbased database search tool?
[Question ID = 3168]
1. BLAST [Option ID = 12666]
2. ENTREZ [Option ID = 12667]
3. CLUSTAL [Option ID = 12668]
4. RASMOL [Option ID = 12669]

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Correct Answer :
ENTREZ [Option ID = 12667]
81) The `PDB' file format can be used to store
[Question ID = 3169]
1. DNA sequence only [Option ID = 12670]
2. Protein sequence only [Option ID = 12671]
3. Both DNA and protein sequences [Option ID = 12672]
4. Protein structure data [Option ID = 12673]
Correct Answer :
Protein structure data [Option ID = 12673]
82) Which of the following has the smallest genome?
[Question ID = 3170]
1. Humans [Option ID = 12674]
2. Wheat [Option ID = 12675]
3. Arabidopsis [Option ID = 12676]
4. Tomato [Option ID = 12677]
Correct Answer :
Arabidopsis [Option ID = 12676]
83) Which of the following is a database dedicated to only a particular organism?
[Question ID = 3171]
1. GenBank [Option ID = 12678]
2. Uniprot [Option ID = 12679]
3. WormBase [Option ID = 12680]
4. CATH [Option ID = 12681]
Correct Answer :
WormBase [Option ID = 12680]
84) Who is the first `Chief of Defence Staff' of India?
[Question ID = 3172]
1. Gen. Bipin Rawat [Option ID = 12682]
2. Gen. Manoj Mukund Naravane [Option ID = 12683]
3. Gen. Dalbir Singh Suhag [Option ID = 12684]
4. Gen. Bikram Singh [Option ID = 12685]
Correct Answer :
Gen. Bipin Rawat [Option ID = 12682]
85) The Ultraviolet radiations in the stratosphere are absorbed by
[Question ID = 3173]
1. SO
2 [Option ID = 12686]
2. Oxygen [Option ID = 12687]
3. Ozone [Option ID = 12688]
4. Argon [Option ID = 12689]
Correct Answer :
Ozone [Option ID = 12688]
86) Which Indian women hockey player is the recipient of `Padma Shri' award (2020)?
[Question ID = 3174]
1. Rani Rampal [Option ID = 12690]
2. Navneet Kaur [Option ID = 12691]
3. Harmanpreet Kaur [Option ID = 12692]
4. Smriti Mandhana [Option ID = 12693]
Correct Answer :
Rani Rampal [Option ID = 12690]
87) Which of the following countries had established a world record in the year 2018 by launching the maximum number of
satellites (104) in a single attempt?
[Question ID = 3175]
1. USA [Option ID = 12694]
2. Russia [Option ID = 12695]
3. India [Option ID = 12696]
4. China [Option ID = 12697]
Correct Answer :
India [Option ID = 12696]

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88) The target protein of the `Glyphosate' herbicide is
[Question ID = 3176]
1. EPSP synthase [Option ID = 12698]
2. Glutamine synthetase [Option ID = 12699]
3. Acetolactate synthetase [Option ID = 12700]
4. D1 protein [Option ID = 12701]
Correct Answer :
EPSP synthase [Option ID = 12698]
89) `Cry proteins' are useful in conferring resistance to plants against
[Question ID = 3177]
1. Viruses [Option ID = 12702]
2. Nematodes [Option ID = 12703]
3. Insects [Option ID = 12704]
4. Bacteria [Option ID = 12705]
Correct Answer :
Insects [Option ID = 12704]
90) Nucleosome is made of
[Question ID = 3178]
1. Histones only [Option ID = 12706]
2. Histones and DNA [Option ID = 12707]
3. DNA only [Option ID = 12708]
4. Histones and RNA [Option ID = 12709]
Correct Answer :
Histones and DNA [Option ID = 12707]
91) The `geneforgene concept' related to the genetics of plantpathogen interaction, formulated by H. Flor, was
developed using
[Question ID = 3179]
1. Potato [Option ID = 12710]
2. Maize [Option ID = 12711]
3. Flax [Option ID = 12712]
4. Wheat [Option ID = 12713]
Correct Answer :
Flax [Option ID = 12712]
92) Which of the following is a nonprotein amino acid?
[Question ID = 3180]
1. Lysine [Option ID = 12714]
2. Morphine [Option ID = 12715]
3. Putrescine [Option ID = 12716]
4. Canavanine [Option ID = 12717]
Correct Answer :
Canavanine [Option ID = 12717]
93) The polyembryony commonly occurs in
[Question ID = 3181]
1. Tomato [Option ID = 12718]
2. Potato [Option ID = 12719]
3. Orange [Option ID = 12720]
4. Turmeric [Option ID = 12721]
Correct Answer :
Orange [Option ID = 12720]
94) The nonvascular plants whose gametophytes are larger than their sporophytes are
[Question ID = 3182]
1. Algae [Option ID = 12722]
2. Fungi [Option ID = 12723]
3. Bryophytes [Option ID = 12724]
4. Pteridophytes [Option ID = 12725]
Correct Answer :
Bryophytes [Option ID = 12724]
95) Coconut water and the edible part of the coconut are equivalent to
[Question ID = 3183]
1. Embryo [Option ID = 12726]
2. Mesocarp [Option ID = 12727]

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3. Endocarp [Option ID = 12728]
4. Endosperm [Option ID = 12729]
Correct Answer :
Endosperm [Option ID = 12729]
96) Sunflower belongs to the following family:
[Question ID = 3184]
1. Cruciferae [Option ID = 12730]
2. Asteraceae [Option ID = 12731]
3. Liliaceae [Option ID = 12732]
4. Fabaceae [Option ID = 12733]
Correct Answer :
Asteraceae [Option ID = 12731]
97) Which of the following is NOT a common second messenger in cell signaling?
[Question ID = 3185]
1. Ca
2+ [Option ID = 12734]
2. Cyclic adenosine monophosphate [Option ID = 12735]
3. Tryptophan [Option ID = 12736]
4. Diacylglycerol [Option ID = 12737]
Correct Answer :
Tryptophan [Option ID = 12736]
98) What would you need to know to determine quantum yield of photosynthesis accurately?
[Question ID = 3186]
1. Amount of CO fixed and O
2
released
2
[Option ID = 12738]
2. Amount of starch synthesized [Option ID = 12739]
3. Amount of 3phosphoglycerate synthesized [Option ID = 12740]
4. Amount of O evolved and light absorbed
2
[Option ID = 12741]
Correct Answer :
Amount of O evolved and light absorbed
2
[Option ID = 12741]
99) Which of the following nucleic acids is the MOST stable?
[Question ID = 3187]
1. DNA [Option ID = 12742]
2. mRNA [Option ID = 12743]
3. rRNA [Option ID = 12744]
4. tRNA [Option ID = 12745]
Correct Answer :
DNA [Option ID = 12742]
100) A nonsense mutation in the reading frame within the coding region of a gene is expected to result in
[Question ID = 3188]
1. Decreased transcription [Option ID = 12746]
2. Premature translation termination [Option ID = 12747]
3. Ribosomal frameshift [Option ID = 12748]
4. Formation of a fusion protein. [Option ID = 12749]
Correct Answer :
Premature translation termination [Option ID = 12747]

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