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MCQs

Total Questions : 57 | Page 3 of 6 pages
Question 21. Which one of the following is not the intermediate of Kreb's cycle?
  1.    Stearate
  2.    Fumarate
  3.    Isocitrate
  4.    Succinate
 Discuss Question
Answer: Option A. -> Stearate
Question 22. The FADH2 and NADH produced by the oxidation of one acetyl-CoA results in the synthesis of about-
  1.    15 ATPs
  2.    6 ATPs
  3.    11 ATPs
  4.    3 ATPs
 Discuss Question
Answer: Option C. -> 11 ATPs
Question 23. In eukaryotes, electron transport occurs in
  1.    cytoplasm
  2.    All of these
  3.    membranes and mitochondria
  4.    endoplasmic reticulum
 Discuss Question
Answer: Option C. -> membranes and mitochondria
Question 24. Which one is not the main protein in electron transport chain?
  1.    Citrate synthease
  2.    Cytochrome oxidase
  3.    NADH dehydrogenase
  4.    Cytochrome bc1 complex
 Discuss Question
Answer: Option A. -> Citrate synthease
Question 25. How many ATPs are produced during citric acid cycle?
  1.    12
  2.    8
  3.    10
  4.    13
 Discuss Question
Answer: Option A. -> 12
Question 26. The catabolism of sugars and fatty acids is similar because
  1.    both of these compounds are funnelled through the TC A/citric acid cycle
  2.    both of these compounds generate redox energy during catabolism
  3.    All of these
  4.    both of these compounds generate chemical energy during catabolism
 Discuss Question
Answer: Option A. -> both of these compounds are funnelled through the TC A/citric acid cycle
Question 27.  How many molecules of ATPs are synthesized per NADH oxidation?
  1.    2
  2.    1
  3.    4
  4.    4
 Discuss Question
Answer: Option C. -> 4
Question 28.  Why is the TCA cycle the central pathway of metabolism of the cell?
  1.    It occurs in the center of the cell
  2.    Its intermediates are commonly used by other metabolic reactions
  3.    All other metabolic pathways depend upon it
  4.    None of the above
 Discuss Question
Answer: Option B. -> Its intermediates are commonly used by other metabolic reactions
Question 29.  Important function of cholesterol is to
  1.    modulate fluidity
  2.    enhance blood circulation
  3.    prevent bile salts formation
  4.    None of these
 Discuss Question
Answer: Option A. -> modulate fluidity
Question 30.  Oxidation of a molecule involves
  1.    gain of electron
  2.    loss of electron
  3.    gain of proton
  4.    loss of proton
 Discuss Question
Answer: Option B. -> loss of electron

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