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MCQs

Total Questions : 211 | Page 9 of 22 pages
Question 81. What happens after glycolysis when oxygen is available as an electron acceptor?
  1.    Pyruvate is formed
  2.    NADH is produced
  3.    Fermentation
  4.    Oxidative phosphorylation
 Discuss Question
Answer: Option B. -> NADH is produced
Answer: (b).NADH is produced
Question 82. Which of the following is correct sequence of processes in the oxidation of glucose?
  1.    Krebs cycle - glycolysis - electron transport
  2.    Glycolysis - Krebs cycle - eletron transport
  3.    Electron transport - Krebs cycle - glycolysis
  4.    Krebs cycle - electron transport - glycolysis
 Discuss Question
Answer: Option B. -> Glycolysis - Krebs cycle - eletron transport
Answer: (b).Glycolysis - Krebs cycle - eletron transport
Question 83. Lactic acid is produced by human muscles during strenuous exercise because of lack of
  1.    oxygen
  2.    NAD⁺
  3.    glucose
  4.    ADP and Pi
 Discuss Question
Answer: Option A. -> oxygen
Answer: (a).oxygen
Question 84. In electron transport, electrons ultimately pass to
  1.    ADP
  2.    cytochrome b
  3.    oxygen
  4.    none of these
 Discuss Question
Answer: Option C. -> oxygen
Answer: (c).oxygen
Question 85. The complete oxidation of glucose yields usable energy in the form of
  1.    FADH₂
  2.    coenzyme A
  3.    ATP
  4.    pyruvic acid
 Discuss Question
Answer: Option C. -> ATP
Answer: (c).ATP
Question 86. During electron transport, protons are pumped out of the mitochondrion at each of the major sites except for
  1.    complex I
  2.    complex II
  3.    complex III
  4.    complex IV
 Discuss Question
Answer: Option B. -> complex II
Answer: (b).complex II
Question 87. 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
Answer: (a).1 molecule of aspartic acid, 1 molecule of ammonia, 1 molecule of carbon dioxide, 3 molecules of ATP
Question 88. 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
Answer: (a).ammonia into a less toxic form
Question 89. 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
Answer: (c).Glycine
Question 90. The aerobic breakdown of glucose known as respiration involves
  1.    electron transport phosphorylation
  2.    glycolysis
  3.    Krebs Cycle
  4.    all of the above
 Discuss Question
Answer: Option D. -> all of the above
Answer: (d).all of the above

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