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MCQs

Total Questions : 211 | Page 5 of 22 pages
Question 41. The acyl co-A formed in the cytosol is transported to
  1.    Mitochondrial matrix
  2.    Microsomes
  3.    ER
  4.    Remains in cytosol
 Discuss Question
Answer: Option A. -> Mitochondrial matrix
Answer: (a).Mitochondrial matrix
Question 42. Membrane potential and proton gradient
  1.    Cancel one another when uncouplers are present
  2.    Reinforce one another when respiratory inhibitors are present
  3.    Are sufficient, separately to make ATP from ADP + Pi
  4.    Are required to make ATP
 Discuss Question
Answer: Option D. -> Are required to make ATP
Answer: (d).Are required to make ATP
Question 43. Every cycle of β-oxidation produces
  1.    1 FAD, 1 NAD⁺ and 2 CO₂ molecules
  2.    1 FADH₂, 1 NADH and 1 acetyl co-A
  3.    1 FADH₂, 1 NAD⁺ and 1 acetyl co-A
  4.    1 FAD, 1 NADH and 2 CO₂ molecules
 Discuss Question
Answer: Option B. -> 1 FADH₂, 1 NADH and 1 acetyl co-A
Answer: (b).1 FADH₂, 1 NADH and 1 acetyl co-A
Question 44. Long-chain fatty acids are oxidized step-wise in one carbon units starting from
  1.    Carboxyl end
  2.    Aliphatic end
  3.    a and b
  4.    None of the mentioned
 Discuss Question
Answer: Option A. -> Carboxyl end
Answer: (a).Carboxyl end
Question 45. Maximum energy per gram on oxidation is yielded from
  1.    Starch
  2.    Fat
  3.    Glycogen
  4.    Protein
 Discuss Question
Answer: Option B. -> Fat
Answer: (b).Fat
Question 46. The regulation of oxidative phosphorylation depends on
  1.    Magnitude of ion motive force
  2.    Magnitude of electron motive force
  3.    Magnitude of proton motive force
  4.    None of the mentioned
 Discuss Question
Answer: Option C. -> Magnitude of proton motive force
Answer: (c).Magnitude of proton motive force
Question 47. In metabolism, NAD is involved in
  1.    Spontaneous reaction
  2.    Elimination reaction
  3.    Redox reactions
  4.    None of the mentioned
 Discuss Question
Answer: Option C. -> Redox reactions
Answer: (c).Redox reactions
Question 48. Where does oxidative phosphorylation take place?
  1.    Ribosomes
  2.    Nucleus
  3.    Mitochondria
  4.    Cell membrane
 Discuss Question
Answer: Option C. -> Mitochondria
Answer: (c).Mitochondria
Question 49. The magnitude of proton motive force depends on
  1.    Energy charge of cell
  2.    Permeability of membrane
  3.    Number of ribosomes in cell
  4.    None of the mentioned
 Discuss Question
Answer: Option A. -> Energy charge of cell
Answer: (a).Energy charge of cell
Question 50. The rate of electron transfer when proton motive force is high is
  1.    Faster
  2.    Slower
  3.    Moderate
  4.    None of the mentioned
 Discuss Question
Answer: Option B. -> Slower
Answer: (b).Slower

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