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MCQs

Total Questions : 133 | Page 8 of 14 pages
Question 71. A __________is a biocatalyst that increases the rate of the reaction without being changed.
  1.    Aluminum oxide
  2.    Silicon dioxide
  3.    Enzyme
  4.    Hydrogen peroxide
 Discuss Question
Answer: Option C. -> Enzyme
Answer: (c).Enzyme
Question 72. What is an apoenzyme?
  1.    It is a protein portion of an enzyme
  2.    It is a non-protein group
  3.    It is a complete, biologically active conjugated enzyme
  4.    It is a prosthetic group
 Discuss Question
Answer: Option A. -> It is a protein portion of an enzyme
Answer: (a).It is a protein portion of an enzyme
Question 73. Enzyme increases the rate of reaction by lowering the activation energy.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 74. Name the coenzyme of riboflavin (B2)?
  1.    NAD or NADP
  2.    FAD and FMN
  3.    Coenzyme A
  4.    Thiamine pyrophosphate
 Discuss Question
Answer: Option B. -> FAD and FMN
Answer: (b).FAD and FMN
Question 75. Name the enzyme which catalyzes the oxidation-reduction reaction?
  1.    Transaminase
  2.    Glutamine synthetase
  3.    Phosphofructokinase
  4.    Oxidoreductase
 Discuss Question
Answer: Option D. -> Oxidoreductase
Answer: (d).Oxidoreductase
Question 76. What is the function of phosphorylase?
  1.    Transfer inorganic phosphate
  2.    Transfer a carboxylate group
  3.    Use H₂O₂ as the electron acceptor
  4.    Transfer amino group
 Discuss Question
Answer: Option A. -> Transfer inorganic phosphate
Answer: (a).Transfer inorganic phosphate
Question 77. Name the enzyme secreted by pancreas?
  1.    Pepsin
  2.    Chymotrypsin
  3.    Trypsin
  4.    Alcohol dehydrogenase
 Discuss Question
Answer: Option C. -> Trypsin
Answer: (c).Trypsin
Question 78. Which of this vitamin is associated with the coenzyme Biocytin?
  1.    Nicotinic acid
  2.    Thiamine
  3.    Biotin
  4.    Pyridoxine
 Discuss Question
Answer: Option C. -> Biotin
Answer: (c).Biotin
Question 79. Mark the CORRECT function of enzyme, Peptidase?
  1.    Cleave phosphodiester bond
  2.    Cleave amino bonds
  3.    Remove phosphate from a substrate
  4.    Removal of H₂O
 Discuss Question
Answer: Option B. -> Cleave amino bonds
Answer: (b).Cleave amino bonds
Question 80. The zymogen is an inactive precursor of an active enzyme.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True

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