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MCQs

Total Questions : 211 | Page 19 of 22 pages
Question 181. The carbon dioxide is primary a product of
  1.    Krebs cycle
  2.    glycolysis
  3.    electron transport phosphorylation.
  4.    lactate fermentation.
 Discuss Question
Answer: Option A. -> Krebs cycle
Answer: (a).Krebs cycle
Question 182. How many CO₂ molecules are exhaled for each O₂ molecule utilized in cellular respiration?
  1.    1
  2.    3
  3.    6
  4.    12
 Discuss Question
Answer: Option A. -> 1
Answer: (a).1
Question 183. Which of the following is not a significant biological oxidizing agent?
  1.    FAD
  2.    Fe³⁺
  3.    O₂
  4.    NAD⁺
 Discuss Question
Answer: Option B. -> Fe³⁺
Answer: (b).Fe³⁺
Question 184. In aerobic respiration, the compound that enters a mitochondrion is
  1.    acetyl CoA
  2.    pyruvate
  3.    phosphoglyceraldehyde
  4.    oxaloacetate
 Discuss Question
Answer: Option B. -> pyruvate
Answer: (b).pyruvate
Question 185. Which of the following is not a feature of oxidative phosphorylation?
  1.    Direct transfer of phosphate from a substrate molecule to ADP
  2.    An electrochemical gradient across the inner mitochondrial membrane
  3.    A membrane bound ATP synthase
  4.    A protonmotive force
 Discuss Question
Answer: Option A. -> Direct transfer of phosphate from a substrate molecule to ADP
Answer: (a).Direct transfer of phosphate from a substrate molecule to ADP
Question 186. How many molecules of ATP are hydrolysed to form two molecule of ammonia?
  1.    10
  2.    5
  3.    16
  4.    15
 Discuss Question
Answer: Option C. -> 16
Answer: (c).16
Question 187. The nitrogen atoms of urea produced in the urea cycle are derived from
  1.    nitrate
  2.    ammonia and aspartic acid
  3.    nitrite
  4.    ammonia
 Discuss Question
Answer: Option B. -> ammonia and aspartic acid
Answer: (b).ammonia and aspartic acid
Question 188. Which of the following is used as carbon atom source while producing urea in the urea cycle?
  1.    Arginine
  2.    Aspartic acid
  3.    Carbon dioxide
  4.    Glucose
 Discuss Question
Answer: Option C. -> Carbon dioxide
Answer: (c).Carbon dioxide
Question 189. Nitrate reduction can be carried out by
  1.    only microorganism
  2.    plant and microorganism
  3.    only plants
  4.    none of these
 Discuss Question
Answer: Option B. -> plant and microorganism
Answer: (b).plant and microorganism
Question 190. The products of urea cycle are
  1.    1 molecule of urea, 1 molecule of ammonia, 1 molecule of ATP and 1 molecule of fumaric acid
  2.    1 molecule of fumaric acid, 1 molecule of urea, 1 molecule of AMP, 2 molecules of ADP
  3.    1 molecule of aspartic acid, 1 molecule of ammonia, 1 molecule of fumaric acid, 1 molecule of ATP
  4.    None of the above
 Discuss Question
Answer: Option B. -> 1 molecule of fumaric acid, 1 molecule of urea, 1 molecule of AMP, 2 molecules of ADP
Answer: (b).1 molecule of fumaric acid, 1 molecule of urea, 1 molecule of AMP, 2 molecules of ADP

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