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MCQs

Total Questions : 88 | Page 6 of 9 pages
Question 51.  Electron transport systems play a vital role in
  1.    Calvin cycle
  2.    photorespiration
  3.    light-dependent reactions
  4.    all of these
 Discuss Question
Answer: Option C. -> light-dependent reactions
Question 52.  Antenna complexes, electron transport chains, and carbon fixation are all found in
  1.    animal cells
  2.    bacterial cells
  3.    plant cells
  4.    association with the reactions of the citric acid cycle
 Discuss Question
Answer: Option C. -> plant cells
Question 53.  Where does the O2 come from that is essential for the proper functioning of oxidative phosphorylation?
  1.    Fermentation
  2.    Light reactions of photosynthesis
  3.    Dark reactions of photosynthesis
  4.    Carbon fixation
 Discuss Question
Answer: Option B. -> Light reactions of photosynthesis
Question 54. . A cyclic electron transport process is the characteristic of
  1.    photosynthesis
  2.    methane oxidation
  3.    sulfide oxidation
  4.    methane production
 Discuss Question
Answer: Option A. -> photosynthesis
Question 55. . Carbon fixation requires the expenditure of ATP molecules which is generated by
  1.    formation of glucose during the Calvin cycle
  2.    replenishment of chlorophyll
  3.    ETS (electron transfer system) during the light reaction
  4.    none of the above
 Discuss Question
Answer: Option C. -> ETS (electron transfer system) during the light reaction
Question 56. . In oxygenic photosynthesis, the electron donor is
  1.    water
  2.    oxygen
  3.    NADH
  4.    NADPH
 Discuss Question
Answer: Option A. -> water
Question 57. . The followings are the products of the light reactions of photosynthesis except
  1.    ATP
  2.    oxygen
  3.    NADPH
  4.    glucose
 Discuss Question
Answer: Option D. -> glucose
Question 58. . The vast majority of the molecules that act as energy carriers to power cellular activities are made in
  1.    the nucleus
  2.    the Golgi apparatus
  3.    the cytosol
  4.    the mitochondria and chloroplasts
 Discuss Question
Answer: Option D. -> the mitochondria and chloroplasts
Question 59. . As a result of the photosynthetic process, which product is formed?
  1.    Oxygen
  2.    Water
  3.    Carbon dioxide
  4.    Both (a) and (b)
 Discuss Question
Answer: Option A. -> Oxygen
Question 60. . In cells having organelles, the steps of the Krebs cycle and the electron transport system occur in the
  1.    cell membrane
  2.    mitochondria
  3.    endoplasmic reticulum
  4.    none of these
 Discuss Question
Answer: Option B. -> mitochondria

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