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MCQs

Total Questions : 63 | Page 6 of 7 pages
Question 51. . Aerobic respiration differs from anaerobic respiration in which of the following respects?
  1.    Anaerobic respiration is glycolysis
  2.    Aerobic respiration requires the electron transport chain
  3.    The final electron acceptors are different
  4.    Aerobic respiration produces less ATP
 Discuss Question
Answer: Option C. -> The final electron acceptors are different
Question 52. . The amount of ATP produced by a cell from glucose when metabolizing it by fermentation means is
  1.    greater than by aerobic metabolism
  2.    lesser than by aerobic metabolism
  3.    exactly or approximately equal to by aerobic metabolism
  4.    none of these
 Discuss Question
Answer: Option B. -> lesser than by aerobic metabolism
Question 53. . In anaerobic respiration, the final electron acceptor can be
  1.    oxygen
  2.    nitrate
  3.    pyruvate
  4.    acetyl-CoA
 Discuss Question
Answer: Option B. -> nitrate
Question 54. . For each pair of electrons passing from NADH located inside the mitochondria to oxygen, how many ATP molecules can be generated?
  1.    1
  2.    2
  3.    3
  4.    4
 Discuss Question
Answer: Option C. -> 3
Question 55. . Which one of the following is not produced in any of the steps of glycolysis?
  1.    NAD+
  2.    NADH
  3.    ADP
  4.    ATP
 Discuss Question
Answer: Option A. -> NAD+
Question 56. . The number of ATP molecules produced from one glucose molecule by a bacterium producing lactic acid is
  1.    greater than producing ethanol
  2.    lesser than producing ethanol
  3.    approximately equal to producing ethanol
  4.    none of these
 Discuss Question
Answer: Option C. -> approximately equal to producing ethanol
Question 57. . Which of the following is the most complete definition of fermentation?
  1.    Oxidation of glucose with organic molecules serving as electron acceptors
  2.    Complete catabolism of glucose to CO2 and HO2
  3.    Production of energy by substrate-level phosphorylation
  4.    Production of ethyl alcohol from glucose
 Discuss Question
Answer: Option A. -> Oxidation of glucose with organic molecules serving as electron acceptors
Question 58. . The enzymes that catalyze the reactions of the Krebs cycle are found in which subcellular organelle of eukaryotes?
  1.    Mitochondrion
  2.    Chloroplast
  3.    Ribosome
  4.    Endoplasmic reticulum
 Discuss Question
Answer: Option A. -> Mitochondrion
Question 59. . Fatty acids are oxidized to acetyl-CoA by which of the following pathways?
  1.    β-oxidation
  2.    Entner-Doudoroff
  3.    pentose phosphate pathway
  4.    Embden-Meyerhof pathway
 Discuss Question
Answer: Option A. -> β-oxidation
Question 60. . The number of ATP molecules produced from one glucose molecule by a bacterium producing lactic acid is
  1.    greater than producing ethanol
  2.    lesser than producing ethanol
  3.    approximately equal to producing ethanol
  4.    none of these
 Discuss Question
Answer: Option C. -> approximately equal to producing ethanol

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