q

Topic:- BIOPHY MSC S2

1. 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]

2. Which of the following is the odd one out in terms of structural classification:

   [Question ID = 4932]

   1. Zinc fingers [Option ID = 19722]

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   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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3. 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]

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   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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4. 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]

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   4. 1.1.1.42 [Option ID = 19733]

   Correct Answer :-

   • 11.4.2.2 [Option ID = 19731]

5. 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]

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   Correct Answer :-

   • Ribosomes [Option ID = 19734]

6. 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]

7. 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]

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   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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8. 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]

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   3. 50 ml [Option ID = 19748]
   4. 100 ml [Option ID = 19749]

   Correct Answer :-

   • 150 ml [Option ID = 19746]

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9. 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]

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   4. 2000 daltons [Option ID = 19753]

   Correct Answer :-

   • 2200 daltons [Option ID = 19750]

10. 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]

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    Correct Answer :-

    • The affinity of the substrate for the enzyme will be higher than that of the product [Option ID = 19755]

11. 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]

12. Collagen is an example of which type of macromolecule:-

    [Question ID = 4942]

    1. Proteins [Option ID = 19762]

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    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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13. Biological membranes are typically largely composed of which type of macromolecule:-

    [Question ID = 4943]

    1. Lipids [Option ID = 19766]
    2. Carbohydrates [Option ID = 19767]

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    3. Proteins [Option ID = 19768]
    4. Proteins with special carbohydrates attached to them [

    Correct Answer :-

14. 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]

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    Correct Answer :-

    • Peptide bond [Option ID = 19770]

15. 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]

16. The most commonly used model system for "genetic studies" is:-

    [Question ID = 4946]

    1. Drosophila melanogaster [Option ID = 19778]

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    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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17. 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]

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    3. B chromosome [Option ID = 19784]
    4. X chromosome [Option ID = 19785]

    Correct Answer :-

    • Lampbrush chromosomes [Option ID = 19782]

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18. 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]

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    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]

19. 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]

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    Correct Answer :-

    • Bound to hemoglobin [Option ID = 19792]

20. 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]

21. Crystal violet is NOT used

    [Question ID = 4951]

    1. In Gram-staining [Option ID = 19798]

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    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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22. 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]

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    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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23. 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]

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    4. Contain a large amount of Mg to transport oxygen [Option ID = 19809]

    Correct Answer :-

    • Doesn't have a nucleus [Option ID = 19808]

24. 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]

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    Correct Answer :-

    • DNA [Option ID = 19810]

25. 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]

26. Which of the following is a polar amino acid?

    [Question ID = 4956]

    1. Threonine [Option ID = 19818]

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    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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27. 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]

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    3. Mechanism of protein synthesis [Option ID = 19824]
    4. Genome synthesis [Option ID = 19825]

    Correct Answer :-

28. 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]

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    Correct Answer :-

    • Hershey and Chase [Option ID = 19828]

29. 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]

30. Restriction Enzymes are:-

    [Question ID = 4960]

    1. Endonuclease [Option ID = 19834]

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    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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31. Which vitamin helps in clotting of the blood?

    [Question ID = 4961]

    1. Vitamin C [Option ID = 19838]
    2. Vitamin K [Option ID = 19839]

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    3. Vitamin A [Option ID = 19840]
    4. Vitamin E [Option ID = 19841]

    Correct Answer :-

    • Vitamin K [Option ID = 19839]

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32. 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]

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    4. Fish [Option ID = 19845]

    Correct Answer :-

    • Humans [Option ID = 19842]

33. 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]

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    Correct Answer :-

    • Cell wall [Option ID = 19848]

34. 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]

35. The disease commonly called ‘Leprosy" is

    [Question ID = 4965]

    1. Mycobacterium leprae [Option ID = 19855]

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    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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36. 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]

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    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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37. 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]

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    4. H-O-H in glycerol molecule [Option ID = 19865]

    Correct Answer :-

    • H-O-H in water molecule [Option ID = 19864]

38. 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]

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    Correct Answer :-

    • IgG [Option ID = 19867]

39. 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]

40. 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]

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    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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41. 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]

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    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 :-

42. 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]

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    Correct Answer :-

    • By decreasing the activation energy of the reaction [Option ID = 19885]

43. 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]

44. Through which organelle the secretory proteins are processed?

    [Question ID = 4974]

    1. Mitochondria [Option ID = 19890]

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    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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45. 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]

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    3. Glycine [Option ID = 19896]
    4. Lysine [Option ID = 19897]

    Correct Answer :-

    • Glycine [Option ID = 19896]

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46. 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]

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    4. Erwinia stewartii [Option ID = 19901]

    Correct Answer :-

    • Agrobacterium tumefaciens [Option ID = 19898]

47. 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]

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    Correct Answer :-

    • Cytokinesis [Option ID = 19905]

48. 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]

49. ABO blood group antigens in humans are different on the basis of:-

    [Question ID = 4979]

    1. Glycoproteins [Option ID = 19913]

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    2. Lipids [Option ID = 19910]
    3. 
       

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