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Home Biochemistry Oxidative Phosphorylation Comments

  • Question
  • A biological redox reaction always involves


  • Options
  • A. an oxidizing agent
  • B. a gain of electrons
  • C. a reducing agent
  • D. all of these

  • Correct Answer
  • all of these 


  • Oxidative Phosphorylation problems


    Search Results


    • 1. Coenzyme Q is involved in electron transport as

    • Options
    • A. directly to O2
    • B. a water-soluble electron donor
    • C. covalently attached cytochrome cofactor
    • D. a lipid-soluble electron carrier
    • Discuss
    • 2. How many CO2 molecules are exhaled for each O2 molecule utilized in cellular respiration?

    • Options
    • A. 1
    • B. 3
    • C. 6
    • D. 12
    • Discuss
    • 3. In aerobic respiration, the compound that enters a mitochondrion is

    • Options
    • A. acetyl CoA
    • B. pyruvate
    • C. phosphoglyceraldehyde
    • D. oxaloacetate
    • Discuss
    • 4. Which of the following is not a feature of oxidative phosphorylation?

    • Options
    • A. Direct transfer of phosphate from a substrate molecule to ADP
    • B. An electrochemical gradient across the inner mitochondrial membrane
    • C. A membrane bound ATP synthase
    • D. A protonmotive force
    • Discuss
    • 5. The irreversibility of the thiokinase reactions (formation of initial acyl-CoA)

    • Options
    • A. make this activation reaction the committed step on the pathway
    • B. is due to the subsequent hydrolysis of the product
    • C. applies only to even-chain fatty acids
    • D. both (a) and (b)
    • Discuss
    • 6. 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
    • 7. 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
    • 8. During glycolysis, electrons removed from glucose are passed to

    • Options
    • A. FAD
    • B. NAD+
    • C. acetyl CoA
    • D. pyruvic acid
    • Discuss
    • 9. The carbon dioxide is primary a product of

    • Options
    • A. Krebs cycle
    • B. glycolysis
    • C. electron transport phosphorylation.
    • D. lactate fermentation.
    • Discuss
    • 10. The complete oxidation of glucose yields usable energy in the form of

    • Options
    • A. FADH2
    • B. coenzyme A
    • C. ATP
    • D. pyruvic acid
    • Discuss


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