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Oxidative Phosphorylation (Biochemistry) Question and Answers-Page first

Oxidative Phosphorylation problems


  • 1. 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
  • 2. In aerobic respiration, the compound that enters a mitochondrion is

  • Options
  • A. acetyl CoA
  • B. pyruvate
  • C. phosphoglyceraldehyde
  • D. oxaloacetate
  • Discuss
  • 3. How many CO2 molecules are exhaled for each O2 molecule utilized in cellular respiration?

  • Options
  • A. 1
  • B. 3
  • C. 6
  • D. 12
  • Discuss
  • 4. 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
  • 5. A biological redox reaction always involves

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