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MCQs

Total Questions : 130 | Page 4 of 13 pages
Question 31. Alpha-helix and b-sheet, if occur together, are found in different structural layers.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 32. B-Sheet is the most stable.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 33. Adjacent polypeptide segments are stacked one above other.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 34. Which of the following will be a characteristic of homotypic quaternary structure?
  1.    Formed by any single peptide chain in a whole protein molecule
  2.    Arrangement of polypeptide chains
  3.    Association between identical polypeptides
  4.    Association between subunits of different structure
 Discuss Question
Answer: Option C. -> Association between identical polypeptides
Answer: (c).Association between identical polypeptides
Question 35. Intracellular protein tertiary structures mostly held together by ___________
  1.    Covalent forces
  2.    Disulfide bridges
  3.    Weak forces
  4.    Ionic bonds
 Discuss Question
Answer: Option C. -> Weak forces
Answer: (c).Weak forces
Question 36. Which polypeptide of cholera enterotoxin is nontoxic but immunogenic?
  1.    A1
  2.    A2
  3.    B
  4.    B1
 Discuss Question
Answer: Option C. -> B
Answer: (c).B
Question 37. What are the disadvantages of recombinant protein or polypeptide vaccines?
  1.    High cost and storage
  2.    Storage and transportation
  3.    Transportation and cost
  4.    Cost, transportation, storage
 Discuss Question
Answer: Option D. -> Cost, transportation, storage
Answer: (d).Cost, transportation, storage
Question 38. What causes smallpox?
  1.    Bacteria
  2.    Virus
  3.    Fungi
  4.    Protozoa
 Discuss Question
Answer: Option B. -> Virus
Answer: (b).Virus
Question 39. Vaccines are used in all the forms, except _________
  1.    Live-attenuated vaccines
  2.    Inactivated vaccines
  3.    Subunit, recombinant, polysaccharide, and conjugate vaccines
  4.    Attenuated, inactivated, portions of protein, polysaccharides
 Discuss Question
Answer: Option D. -> Attenuated, inactivated, portions of protein, polysaccharides
Answer: (d).Attenuated, inactivated, portions of protein, polysaccharides
Question 40. Who developed the first vaccine?
  1.    Pasteur
  2.    Salk
  3.    Jenner
  4.    Landsteiner
 Discuss Question
Answer: Option C. -> Jenner
Answer: (c).Jenner

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