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MCQs

Total Questions : 211 | Page 14 of 22 pages
Question 131. Which of the following serves as a reactant in photosynthesis and a product in cellular respiration?
  1.    O₂
  2.    CO₂
  3.    Sunlight
  4.    ATP
 Discuss Question
Answer: Option B. -> CO₂
Answer: (b).CO₂
Question 132. The cytochrome c oxidase complex
  1.    accepts electrons from cyt c
  2.    donates four electrons to O₂
  3.    pumps protons out of the matrix space
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Answer: (d).all of these
Question 133. Hydrogen (electron) acceptor in the light reactions is
  1.    ADP
  2.    NADP+
  3.    NAD+
  4.    FADH
 Discuss Question
Answer: Option B. -> NADP+
Answer: (b).NADP+
Question 134. In the Calvin cycle, carbon dioxide is fixed in a reaction with the
  1.    ribulose diphosphate
  2.    ribulose phosphate
  3.    ribose tri phosphate
  4.    3-phosphoglyceric acid
 Discuss Question
Answer: Option A. -> ribulose diphosphate
Answer: (a).ribulose diphosphate
Question 135. What do NAD+, NADP+, and FAD+ all have in common?
  1.    They are reduced
  2.    They have a full complement of electrons
  3.    They are oxidized
  4.    They are what is used during carbon fixation in photosynthesis
 Discuss Question
Answer: Option C. -> They are oxidized
Answer: (c).They are oxidized
Question 136. Complex 1 is also called _________
  1.    NADH dehydrogenase
  2.    Succinate dehydrogenase
  3.    Cytochrome bc1 complex
  4.    Cytochrome oxidase
 Discuss Question
Answer: Option A. -> NADH dehydrogenase
Answer: (a).NADH dehydrogenase
Question 137. Complex 2 is also called _________
  1.    NADH dehydrogenase
  2.    Succinate dehydrogenase
  3.    Cytochrome bc1 complex
  4.    Cytochrome oxidase
 Discuss Question
Answer: Option B. -> Succinate dehydrogenase
Answer: (b).Succinate dehydrogenase
Question 138. Complex 3 is also called _________
  1.    NADH dehydrogenase
  2.    Succinate dehydrogenase
  3.    Cytochrome bc1 complex
  4.    Cytochrome oxidase
 Discuss Question
Answer: Option C. -> Cytochrome bc1 complex
Answer: (c).Cytochrome bc1 complex
Question 139. Complex 4 is also called _________
  1.    NADH dehydrogenase
  2.    Succinate dehydrogenase
  3.    Cytochrome bc1 complex
  4.    Cytochrome oxidase
 Discuss Question
Answer: Option D. -> Cytochrome oxidase
Answer: (d).Cytochrome oxidase
Question 140. In mitochondria, hydride ions are removed from substrates by _________
  1.    NAD-linked dehydrogenases
  2.    NADP-linked dehydrogenases
  3.    ATP synthase
  4.    Succinate dehydrogenases
 Discuss Question
Answer: Option A. -> NAD-linked dehydrogenases
Answer: (a).NAD-linked dehydrogenases

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