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Home Biochemistry Oxidative Phosphorylation Comments

  • Question
  • FAD is reduced to FADH2 during


  • Options
  • A. electron transport phosphorylation
  • B. lactate fermentation
  • C. Krebs cycle
  • D. glycolysis

  • Correct Answer
  • Krebs cycle 


  • Oxidative Phosphorylation problems


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    • 1. The complete oxidation of glucose yields usable energy in the form of

    • Options
    • A. FADH2
    • B. coenzyme A
    • C. ATP
    • D. pyruvic acid
    • Discuss
    • 2. The carbon dioxide is primary a product of

    • Options
    • A. Krebs cycle
    • B. glycolysis
    • C. electron transport phosphorylation.
    • D. lactate fermentation.
    • Discuss
    • 3. During glycolysis, electrons removed from glucose are passed to

    • Options
    • A. FAD
    • B. NAD+
    • C. acetyl CoA
    • D. pyruvic acid
    • Discuss
    • 4. The aerobic breakdown of glucose known as respiration involves

    • Options
    • A. electron transport phosphorylation
    • B. glycolysis
    • C. Krebs Cycle
    • D. all of the above
    • Discuss
    • 5. Lactic acid is produced by human muscles during strenuous exercise because of lack of

    • Options
    • A. oxygen
    • B. NAD+
    • C. glucose
    • D. ADP and Pi
    • Discuss
    • 6. Which of the following is correct sequence of processes in the oxidation of glucose?

    • Options
    • A. Krebs cycle - glycolysis - electron transport
    • B. Glycolysis - Krebs cycle - eletron transport
    • C. Electron transport - Krebs cycle - glycolysis
    • D. Krebs cycle - electron transport - glycolysis
    • Discuss
    • 7. In electron transport, electrons ultimately pass to

    • Options
    • A. ADP
    • B. cytochrome b
    • C. oxygen
    • D. none of these
    • Discuss
    • 8. During electron transport, protons are pumped out of the mitochondrion at each of the major sites except for

    • Options
    • A. complex I
    • B. complex II
    • C. complex III
    • D. complex IV
    • Discuss
    • 9. What happens after glycolysis when oxygen is available as an electron acceptor?

    • Options
    • A. Pyruvate is formed
    • B. NADH is produced
    • C. Fermentation
    • D. Oxidative phosphorylation
    • Discuss
    • 10. Which of the following is not a significant biological oxidizing agent?

    • Options
    • A. FAD
    • B. Fe3+
    • C. O2
    • D. NAD+
    • Discuss


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