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MCQs

Total Questions : 63 | Page 5 of 7 pages
Question 41. . The enzymes for glycolysis are located
  1.    on the inner surface of the cell membrane
  2.    on the inner membrane of the mitochondrion
  3.    on the outer membrane of the chloroplast
  4.    in the cytoplasm
 Discuss Question
Answer: Option D. -> in the cytoplasm
Question 42. . Glucose can be broken down to pyruvate by
  1.    Entner-Doudoroff pathway
  2.    tricarboxylic acid cycle
  3.    both (a) and (b)
  4.    none of these
 Discuss Question
Answer: Option A. -> Entner-Doudoroff pathway
Question 43. . Which of the following is accomplished in chemiosmosis?
  1.    The oxidation of ATP
  2.    The oxidation of water
  3.    The oxidation of NADH
  4.    The oxidation of CO2
 Discuss Question
Answer: Option C. -> The oxidation of NADH
Question 44. .  A yeast or fungal cell produces how many net ATP molecules per molecule of glucose when completely oxidized?
  1.    32
  2.    34
  3.    36
  4.    38
 Discuss Question
Answer: Option C. -> 36
Question 45. . Before most molecules can enter the Krebs citric acid cycle, they must be converted to
  1.    citric acid
  2.    oxaloacetic acid
  3.    NADH or FADH
  4.    acetyl-CoA
 Discuss Question
Answer: Option D. -> acetyl-CoA
Question 46. . In lactic acid fermentation, the final electron acceptor would be
  1.    fructose
  2.    pyruvate
  3.    glucose
  4.    acetyl-CoA
 Discuss Question
Answer: Option B. -> pyruvate
Question 47. . The amount of ATP that can be obtained by complete oxidation of a glucose by a bacterium is
  1.    greater than by a yeast cell
  2.    lesser than by a yeast cell
  3.    exactly or approximately equal to by a yeast cell
  4.    none of these
 Discuss Question
Answer: Option A. -> greater than by a yeast cell
Question 48. .  How many oxygen molecules are required in the fermentation of one molecule of glucose to ethanol and CO2?
  1.    0
  2.    1
  3.    2
  4.    36
 Discuss Question
Answer: Option A. -> 0
Question 49. . Most bacterial fermentations yield how many net ATP molecules per molecule of glucose?
  1.    1
  2.    2
  3.    4
  4.    6
 Discuss Question
Answer: Option B. -> 2
Question 50. . Which one of the following is produced in the greatest numbers during one turn of the Krebs cycle?
  1.    NADH
  2.    Acetyl-CoA
  3.    FADH2
  4.    ATP
 Discuss Question
Answer: Option A. -> NADH

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