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MCQs

Total Questions : 16 | Page 2 of 2 pages
Question 11.  The products of urea cycle are
  1.    1 molecule of urea, 1 molecule of ammonia, 1 molecule of ATP and 1 molecule of fumaric acid
  2.    1 molecule of fumaric acid, 1 molecule of urea, 1 molecule of AMP, 2 molecules of ADP
  3.    1 molecule of aspartic acid, 1 molecule of ammonia, 1 molecule of fumaric acid, 1 molecule of ATP
  4.    None of the above
 Discuss Question
Answer: Option B. -> 1 molecule of fumaric acid, 1 molecule of urea, 1 molecule of AMP, 2 molecules of ADP
Question 12.  Urea cycle converts
  1.    ammonia into a less toxic form
  2.    ketoacids into amino acids
  3.    amino acids into ketoacids
  4.    none of these
 Discuss Question
Answer: Option A. -> ammonia into a less toxic form
Question 13.  Nitrate reduction can be carried out by
  1.    only microorganism
  2.    plant and microorganism
  3.    only plants
  4.    none of these
 Discuss Question
Answer: Option B. -> plant and microorganism
Question 14.  Which of the following is used as carbon atom source while producing urea in the urea cycle?
  1.    Arginine
  2.    Aspartic acid
  3.    Carbon dioxide
  4.    Glucose
 Discuss Question
Answer: Option C. -> Carbon dioxide
Question 15.  Which of the following amino acid do not fall under the category of essential amino acid?
  1.    Histidine
  2.    Leucine
  3.    Glycine
  4.    Methionine
 Discuss Question
Answer: Option C. -> Glycine
Question 16.  The inputs to one cycle of the urea cycle are
  1.    1 molecule of aspartic acid, 1 molecule of ammonia, 1 molecule of carbon dioxide, 3 molecules of ATP
  2.    1 molecule of urea, 1 molecule of ammonia, 3 molecules of ATP and 1 molecule of fumaric acid
  3.    1 molecule of fumaric acid, 1 molecule of urea, 3 molecules of AMP
  4.    None of the above
 Discuss Question
Answer: Option A. -> 1 molecule of aspartic acid, 1 molecule of ammonia, 1 molecule of carbon dioxide, 3 molecules of ATP

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