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

This post was last modified on 27 December 2020

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Topic:- BIOPHY MSC S2

Which of the following phenomenon has been observed to occur in certain cellular systems but is not defined by the Central Dogma of molecular biology?

[Question ID = 4931]
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1. Transcription [Option ID = 19718]
2. Reverse transcription [Option ID = 19719]
3. Translation [Option ID = 19720]
4. Reverse translation [Option ID = 19721]
Correct Answer :-
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• Reverse transcription [Option ID = 19719]
Which of the following is the odd one out in terms of structural classification:

[Question ID = 4932]
1. Zinc fingers [Option ID = 19722]
2. Leucine zippers [Option ID = 19723]
3. Helix-turn-helix [Option ID = 19724]
4. Beta turns [Option ID = 19725]
Correct Answer :-

• Beta turns [Option ID = 19725]
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The process of Glycolysis involves

[Question ID = 4933]
1. Turning glucose into pyruvate [Option ID = 19726]
2. Synthesis of glucose from non-carbohydrate sources [Option ID = 19727]
3. Changing glucose to pentoses [Option ID = 19728]
4. Turning glycogen to glucose [Option ID = 19729]
Correct Answer :-

• Turning glucose into pyruvate [Option ID = 19726]

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Which of the following is an INCORRECT example of the EC (Enzyme commission numbers) for classification of enzymes:

[Question ID = 4934]
1. 2.7.1.1 [Option ID = 19730]
2. 11.4.2.2 [Option ID = 19731]
3. 1.2.4.2 [Option ID = 19732]
4. 1.1.1.42 [Option ID = 19733]
Correct Answer :-

• 11.4.2.2 [Option ID = 19731]
The cell organelles involved in the protein synthesis are:-
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[Question ID = 4935]
1. Ribosomes [Option ID = 19734]
2. Golgi apparatus [Option ID = 19735]
3. Mitochondria [Option ID = 19736]
4. tRNA [Option ID = 19737]
Correct Answer :-

• Ribosomes [Option ID = 19734]
A variety of RNA molecules are now known to be found in cells, and often named according to their function. Which of the following is named according to their size:-

[Question ID = 4936]
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1. miRNA [Option ID = 19738]
2. piRNA [Option ID = 19739]
3. tasiRNA [Option ID = 19740]
4. eRNA [Option ID = 19741]
Correct Answer :-
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• miRNA [Option ID = 19738]
Prokaryotes are organisms that do not have a well defined nucleus, as opposed to eukaryotes. Which of the following is not a eukaryote:-

[Question ID = 4937]
1. Algae [Option ID = 19742]
2. Fungi [Option ID = 19743]
3. Archaea [Option ID = 19744]
4. Protozoa [Option ID = 19745]
Correct Answer :-

• Archaea [Option ID = 19744]
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You have a 2 M solution of NaCl, which needs to be diluted to 0.5 M concentration. How much water do we add to 50 ml of such solution to make it correct molarity?

[Question ID = 4938]
1. 150 ml [Option ID = 19746]
2. 200 ml [Option ID = 19747]
3. 50 ml [Option ID = 19748]
4. 100 ml [Option ID = 19749]
Correct Answer :-

• 150 ml [Option ID = 19746]

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The expected molecular weight of a protein of 200 amino acids is:-

[Question ID = 4939]
1. 2200 daltons [Option ID = 19750]
2. 2400 daltons [Option ID = 19751]
3. 200 daltons [Option ID = 19752]
4. 2000 daltons [Option ID = 19753]
Correct Answer :-

• 2200 daltons [Option ID = 19750]
In an enzyme catalyzed reaction, which of the following statements is expected to be TRUE:-
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[Question ID = 4940]
1. The substrate and product will both have same affinity for the enzyme [Option ID = 19754]
2. The affinity of the substrate for the enzyme will be higher than that of the product [Option ID = 19755]
3. The affinity of the product for the enzyme will be higher than that of the substrate [Option ID = 19756]
4. Either substrate or product may have higher affinity for the enzyme [Option ID = 19757]
Correct Answer :-

• The affinity of the substrate for the enzyme will be higher than that of the product [Option ID = 19755]
The most commonly accepted theory of protein folding suggests that:-

[Question ID = 4941]
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1. The hydrophobic residues are buried in the core and the hydrophilic aminoacids are on the surface [Option ID = 19758]
2. The hydrophylic residues are buried in the core and the hydrophobic aminoacids are on the surface [Option ID = 19759]
3. The hydrophylic and hydrophobic residues are distributed equally on the surface and the interior [Option ID = 19760]
4. Only the hydrophilic aminoacids are responsible for the protein folding [Option ID = 19761]
Correct Answer :-
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• The hydrophobic residues are buried in the core and the hydrophilic aminoacids are on the surface [Option ID = 19758]
Collagen is an example of which type of macromolecule:-

[Question ID = 4942]
1. Proteins [Option ID = 19762]
2. Lipids [Option ID = 19763]
3. Carbohydrates [Option ID = 19764]
4. Nucleotides [Option ID = 19765]
Correct Answer :-

• Proteins [Option ID = 19762]
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Biological membranes are typically largely composed of which type of macromolecule:-

[Question ID = 4943]
1. Lipids [Option ID = 19766]
2. Carbohydrates [Option ID = 19767]
3. Proteins [Option ID = 19768]
4. Proteins with special carbohydrates attached to them [
Correct Answer :-
Partial double bond character is the unique feature of which bond:-
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[Question ID = 4944]
1. Peptide bond [Option ID = 19770]
2. Nitrile bond [Option ID = 19771]
3. Amide bond [Option ID = 19772]
4. Carboxyl bond [Option ID = 19773]
Correct Answer :-

• Peptide bond [Option ID = 19770]
The amino acid methionine is typically coded for by the codon:-

[Question ID = 4945]
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1. UAG [Option ID = 19774]
2. UAA [Option ID = 19775]
3. AUG [Option ID = 19776]
4. UGA [Option ID = 19777]
Correct Answer :-
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• AUG [Option ID = 19776]
The most commonly used model system for "genetic studies" is:-

[Question ID = 4946]
1. Drosophila melanogaster [Option ID = 19778]
2. Arabidopsis [Option ID = 19779]
3. Mus musculus [Option ID = 19780]
4. Hydra [Option ID = 19781]
Correct Answer :-

• Drosophila melanogaster [Option ID = 19778]
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Which peculiar form of chromosome is found in salivary gland of Drosophila

[Question ID = 4947]
1. Lampbrush chromosomes [Option ID = 19782]
2. Z chromosome [Option ID = 19783]
3. B chromosome [Option ID = 19784]
4. X chromosome [Option ID = 19785]
Correct Answer :-

• Lampbrush chromosomes [Option ID = 19782]

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Which of the following statements about plasmid is NOT correct?

[Question ID = 4948]
1. It provides functional benefits to the host such as resistance to antibiotics, degradative functions, and/or virulence [Option ID = 19786]
2. It help bacteria to survive in adverse conditions because they replicate independently from the host chromosomal DNA [Option ID = 19787]
3. They may carry genes that give their host a selective advantage [Option ID = 19788]
4. The origin of replication of main chromosome and plasmid is same [Option ID = 19789]
Correct Answer :-

• The origin of replication of main chromosome and plasmid is same [Option ID = 19789]
Most of the O2 is transported in blood as:-
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[Question ID = 4949]
1. In carbonic acid [Option ID = 19790]
2. Dissolved in the plasma [Option ID = 19791]
3. Bound to hemoglobin [Option ID = 19792]
4. In bicarbonate ion [Option ID = 19793]
Correct Answer :-

• Bound to hemoglobin [Option ID = 19792]
Gram Negative bacteria

[Question ID = 4950]
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1. Have a thick peptidoglycan layer [Option ID = 19794]
2. Have no outer lipid membrane [Option ID = 19795]
3. Appear purple crystal violet stain when Gram staining process is applied [Option ID = 19796]
4. Appear pale reddish color when observed under a light microscope following Gram staining [Option ID = 19797]
Correct Answer :-
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• Appear pale reddish color when observed under a light microscope following Gram staining [Option ID = 19797]
Crystal violet is NOT used

[Question ID = 4951]
1. In Gram-staining [Option ID = 19798]
2. To determine cell viability [Option ID = 19799]
3. In acid-fast staining [Option ID = 19800]
4. As a desiccator [Option ID = 19801]
Correct Answer :-

• As a desiccator [Option ID = 19801]
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Which of the following are/is a type of non-covalent interactions in proteins?

[Question ID = 4952]
1. Van der Waal interactions [Option ID = 19802]
2. H-bonding [Option ID = 19803]
3. Both Van der Waal interactions and H-bonding [Option ID = 19804]
4. Di-sulphide bonds [Option ID = 19805]
Correct Answer :-

• Both Van der Waal interactions and H-bonding [Option ID = 19804]

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Which is correct about a human RBC:

[Question ID = 4953]
1. It's genome is tetraploid [Option ID = 19806]
2. Has a life period of 180 days [Option ID = 19807]
3. Doesn't have a nucleus [Option ID = 19808]
4. Contain a large amount of Mg to transport oxygen [Option ID = 19809]
Correct Answer :-

• Doesn't have a nucleus [Option ID = 19808]
Sanger method is used to determine the sequence of:-
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[Question ID = 4954]
1. DNA [Option ID = 19810]
2. RNA [Option ID = 19811]
3. Protein [Option ID = 19812]
4. Lipid [Option ID = 19813]
Correct Answer :-

• DNA [Option ID = 19810]
What would happen to red blood cells if the haem group were removed from haemoglobin?

[Question ID = 4955]
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1. White blood cells would not be able to multiply [Option ID = 19814]
2. Red blood cells would not be able to multiply [Option ID = 19815]
3. Blood clot formation would be inhibited [Option ID = 19816]
4. Red blood cells would not be able to transport oxygen [Option ID = 19817]
Correct Answer :-
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• Red blood cells would not be able to transport oxygen [Option ID = 19817]
Which of the following is a polar amino acid?

[Question ID = 4956]
1. Threonine [Option ID = 19818]
2. Alanine [Option ID = 19819]
3. Proline [Option ID = 19820]
4. Methionine [Option ID = 19821]
Correct Answer :-

• Threonine [Option ID = 19818]
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Prof. Har Gobind Khorana was awarded Nobel Prize for:-

[Question ID = 4957]
1. Proposing wobble hypothesis [Option ID = 19822]
2. Interpretation of genetic code [Option ID = 19823]
3. Mechanism of protein synthesis [Option ID = 19824]
4. Genome synthesis [Option ID = 19825]
Correct Answer :-
Scientist(s) who proved that DNA and not protein as the genetic material:-
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[Question ID = 4958]
1. Pasteur [Option ID = 19826]
2. Jenner [Option ID = 19827]
3. Hershey and Chase [Option ID = 19828]
4. Beadle and Tatum [Option ID = 19829]
Correct Answer :-

• Hershey and Chase [Option ID = 19828]
Which of the following reagents are not a part of a typical polymerase chain reaction?

[Question ID = 4959]
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1. Forward and reverse primers [Option ID = 19830]
2. DNA polymerase [Option ID = 19831]
3. dNTP [Option ID = 19832]
4. Nucleotide triphosphates [Option ID = 19833]
Correct Answer :-
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• Nucleotide triphosphates [Option ID = 19833]
Restriction Enzymes are:-

[Question ID = 4960]
1. Endonuclease [Option ID = 19834]
2. Exonuclease [Option ID = 19835]
3. Protease [Option ID = 19836]
4. Lipase [Option ID = 19837]
Correct Answer :-

• Endonuclease [Option ID = 19834]
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Which vitamin helps in clotting of the blood?

[Question ID = 4961]
1. Vitamin C [Option ID = 19838]
2. Vitamin K [Option ID = 19839]
3. Vitamin A [Option ID = 19840]
4. Vitamin E [Option ID = 19841]
Correct Answer :-

• Vitamin K [Option ID = 19839]

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Urea is the main nitrogenous waste in:-

[Question ID = 4962]
1. Humans [Option ID = 19842]
2. Birds [Option ID = 19843]
3. Insects [Option ID = 19844]
4. Fish [Option ID = 19845]
Correct Answer :-

• Humans [Option ID = 19842]
The main site of action of Penicillin is:
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[Question ID = 4963]
1. Ribosome [Option ID = 19846]
2. Plasma membrane [Option ID = 19847]
3. Cell wall [Option ID = 19848]
4. DNA [Option ID = 19849]
Correct Answer :-

• Cell wall [Option ID = 19848]
Fructose and glucose is constituent of

[Question ID = 4964]
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1. Maltose [Option ID = 19850]
2. Galactose [Option ID = 19851]
3. Mannose [Option ID = 19852]
4. Sucrose [Option ID = 19853]
Correct Answer :-
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• Sucrose [Option ID = 19853]
The disease commonly called ‘Leprosy" is

[Question ID = 4965]
1. Mycobacterium leprae [Option ID = 19855]
2. Treponema leprae [Option ID = 19856]
3. Bacillus leprae [Option ID = 19857]
4. Clostridium leprae [Option ID = 19854]
Correct Answer :-

• Mycobacterium leprae [Option ID = 19855]
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The value of ionic product of water is:-

[Question ID = 4966]
1. 1 x 10^-7 at 25°C [Option ID = 19858]
2. 1 x 10¹⁴ at 27°C [Option ID = 19859]
3. 1 x 10^-14 at 25°C [Option ID = 19860]
4. 1 x 10⁷ at 27°C [Option ID = 19861]
Correct Answer :-

• 1 x 10^-14 at 25°C [Option ID = 19860]

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104.5° is the bond angle between?

[Question ID = 4967]
1. H-O-H in ethyl alcohol [Option ID = 19862]
2. H-O-H in methyl alcohol [Option ID = 19863]
3. H-O-H in water molecule [Option ID = 19864]
4. H-O-H in glycerol molecule [Option ID = 19865]
Correct Answer :-

• H-O-H in water molecule [Option ID = 19864]
Which antibody is in highest concentration of immunoglobulin in the blood of a newly born human child?
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[Question ID = 4968]
1. IgA [Option ID = 19866]
2. IgG [Option ID = 19867]
3. IgM [Option ID = 19868]
4. IgE [Option ID = 19869]
Correct Answer :-

• IgG [Option ID = 19867]
Factor that play an important role in correct folding of other proteins are called:-

[Question ID = 4969]
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1. Structron [Option ID = 19870]
2. Chaperon [Option ID = 19871]
3. Heat Shock Proteins [Option ID = 19872]
4. Foldon [Option ID = 19873]
Correct Answer :-
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• Chaperon [Option ID = 19871]
Endocytosis and membrane fusion is the mechanism adopted by which viruses to enter into the host cells:-

[Question ID = 4970]
1. All viruses [Option ID = 19874]
2. Enveloped viruses [Option ID = 19875]
3. Coronavirus [Option ID = 19876]
4. SARS [Option ID = 19877]
Correct Answer :-

• Enveloped viruses [Option ID = 19875]
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Which statement best defines an oncogene?

[Question ID = 4971]
1. An oncogene never codes for a cell cycle protein, which promotes cell proliferation [Option ID = 19878]
2. Oncogenes are always involved in inherited forms of cancer [Option ID = 19879]
3. An oncogene codes for a protein that prevents a cell from undergoing apoptosis [Option ID = 19880]
4. An oncogene is a dominantly expressed mutated gene that renders a cell advantageous towards survival [Option ID = 19881]
Correct Answer :-
How an enzyme increases the rate of catalysis?
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[Question ID = 4972]
1. By decreasing the energy of the substrate [Option ID = 19882]
2. By decreasing product stability [Option ID = 19883]
3. By increasing the activation barrier of the reaction [Option ID = 19884]
4. By decreasing the activation energy of the reaction [Option ID = 19885]
Correct Answer :-

• By decreasing the activation energy of the reaction [Option ID = 19885]
The amino acids is a precursor of plant hormone

[Question ID = 4973]
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1. Tryptophan [Option ID = 19886]
2. Histidine [Option ID = 19887]
3. Proline [Option ID = 19888]
4. Tyrosine [Option ID = 19889]
Correct Answer :-
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• Tryptophan [Option ID = 19886]
Through which organelle the secretory proteins are processed?

[Question ID = 4974]
1. Mitochondria [Option ID = 19890]
2. Golgi apparatus [Option ID = 19891]
3. Peroxisomes [Option ID = 19892]
4. Nucleus [Option ID = 19893]
Correct Answer :-

• Golgi apparatus [Option ID = 19891]
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Which amino acid can be considered as the simplest on the basis of side chain?

[Question ID = 4975]
1. Leucine [Option ID = 19894]
2. Valine [Option ID = 19895]
3. Glycine [Option ID = 19896]
4. Lysine [Option ID = 19897]
Correct Answer :-

• Glycine [Option ID = 19896]

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Crown gall disease in plants is caused by?

[Question ID = 4976]
1. Agrobacterium tumefaciens [Option ID = 19898]
2. Xanthomonas campestris [Option ID = 19899]
3. Rhizobium etli [Option ID = 19900]
4. Erwinia stewartii [Option ID = 19901]
Correct Answer :-

• Agrobacterium tumefaciens [Option ID = 19898]
Which is not a part of genetic material division during human mitotic cell cycle?
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[Question ID = 4977]
1. Prophase [Option ID = 19902]
2. Metaphase [Option ID = 19903]
3. Anaphase [Option ID = 19904]
4. Cytokinesis [Option ID = 19905]
Correct Answer :-

• Cytokinesis [Option ID = 19905]
Which antibody has multiple subtypes?

[Question ID = 4978]
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1. IgM [Option ID = 19906]
2. IgG [Option ID = 19907]
3. IgD [Option ID = 19908]
4. IgE [Option ID = 19909]
Correct Answer :-
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• IgG [Option ID = 19907]
ABO blood group antigens in humans are different on the basis of:-

[Question ID = 4979]
1. Glycoproteins [Option ID = 19913]
2. Lipids [Option ID = 19910]
3. This download link is referred from the post: DUET Last 10 Years 2011-2021 Question Papers With Answer Key || Delhi University Entrance Test conducted by the NTA

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This post was last modified on 27 December 2020

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