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Home Biochemistry Photosynthesis and Respiration Comments

  • Question
  • The vast majority of the molecules that act as energy carriers to power cellular activities are made in


  • Options
  • A. the nucleus
  • B. the Golgi apparatus
  • C. the cytosol
  • D. the mitochondria and chloroplasts

  • Correct Answer
  • the mitochondria and chloroplasts 


  • Photosynthesis and Respiration problems


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    • 1. Which enzyme is involved in carbon-fixation reaction?

    • Options
    • A. NADP reductase
    • B. Cytochrome reductase
    • C. Ribulose bisphosphate carboxylase
    • D. Glycerol kinase
    • Discuss
    • 2. In the Calvin cycle, carbon dioxide is fixed in a reaction with the

    • Options
    • A. ribulose diphosphate
    • B. ribulose phosphate
    • C. ribose tri phosphate
    • D. 3-phosphoglyceric acid
    • Discuss
    • 3. Carbon dioxide is reduced in

    • Options
    • A. noncyclic photophosphorylation
    • B. the Calvin cycle
    • C. the light reactions
    • D. both light and dark reactions
    • Discuss
    • 4. Which of the following enzyme does not take part in the TCA cycle?

    • Options
    • A. Citrate synthase
    • B. Iso-citrate dehydrogenase
    • C. Pyruvate dehydrogenase
    • D. Malate dehydrogenase
    • Discuss
    • 5. How many ATPs are produced during citric acid cycle?

    • Options
    • A. 10
    • B. 13
    • C. 12
    • D. 8
    • Discuss
    • 6. Oxidative phosphorylation is to respiration as __________ is to photosynthesis

    • Options
    • A. carbon fixation
    • B. electron transport chain
    • C. light capture by chlorophyll
    • D. reduction of NADPH
    • Discuss
    • 7. Where does the O2 come from that is essential for the proper functioning of oxidative phosphorylation?

    • Options
    • A. Fermentation
    • B. Light reactions of photosynthesis
    • C. Dark reactions of photosynthesis
    • D. Carbon fixation
    • Discuss
    • 8. Electron transport systems play a vital role in

    • Options
    • A. Calvin cycle
    • B. photorespiration
    • C. light-dependent reactions
    • D. all of these
    • Discuss
    • 9. Which of the following represents a correct ordering of the events that occur during the respiration of glucose in the absence of O2?

    • Options
    • A. Glycolysis; citric acid cycle; oxidative phosphorylation
    • B. Glycolysis; oxidative phosphorylation; citric acid cycle
    • C. Oxidative phosphorylation; citric acid cycle; glycolysis
    • D. Glycolysis; fermentation
    • Discuss
    • 10. Which of the following structures or processes are logically associated with chloroplasts?

    • Options
    • A. Plant cells
    • B. Chlorophyll
    • C. Thylakoid membranes
    • D. All of these
    • Discuss


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