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MCQs

Total Questions : 131 | Page 6 of 14 pages
Question 51. Which of following is called age of reptiles?
  1.    Proterozoic
  2.    Mesozoic
  3.    hadean
  4.    Archaean
 Discuss Question
Answer: Option B. -> Mesozoic
Answer: (b).Mesozoic
Question 52. What are the types of nucleic acids are found in living organisms?
  1.    deoxyribonucleic acid and nucleotide acid
  2.    deoxyribonucleic acid and ribonucleic acid
  3.    ribonucleic acid and nucleotide acid
  4.    ribonucleic acid and nucleoside acid
 Discuss Question
Answer: Option B. -> deoxyribonucleic acid and ribonucleic acid
Answer: (b).deoxyribonucleic acid and ribonucleic acid
Question 53. Purines and pyrimidines are different molecules.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 54. How many types of nucleotides are present in DNA?
  1.    1
  2.    2
  3.    3
  4.    4
 Discuss Question
Answer: Option D. -> 4
Answer: (d).4
Question 55. Ribozymes are _____________
  1.    cell organelle
  2.    enzymes
  3.    nucleotide
  4.    nucleoside
 Discuss Question
Answer: Option B. -> enzymes
Answer: (b).enzymes
Question 56. ATP and GTP are __________
  1.    cells
  2.    receptors
  3.    nucleotides
  4.    nucleic acids
 Discuss Question
Answer: Option C. -> nucleotides
Answer: (c).nucleotides
Question 57. Mercaptoethanol breaks which bonds present in the protein?
  1.    Hydrogen
  2.    Disulphide
  3.    Covalent
  4.    Non-covalent
 Discuss Question
Answer: Option B. -> Disulphide
Answer: (b).Disulphide
Question 58. The mutated and normal prion proteins associated with CJD have the same amino acid sequence.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 59. Which protein is involved in Creutzfeld-Jacob disease (CJD)?
  1.    Myoglobin
  2.    Myosin
  3.    Keratin
  4.    Prion
 Discuss Question
Answer: Option D. -> Prion
Answer: (d).Prion
Question 60. The Creutzfeld-Jacob disease attacks the ______________
  1.    heart
  2.    lungs
  3.    kidney
  4.    brain
 Discuss Question
Answer: Option D. -> brain
Answer: (d).brain

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