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Home Biochemistry TCA Cycle Comments

  • Question
  • Malate-asparatate shuttle operates in


  • Options
  • A. lungs and liver
  • B. heart and liver
  • C. pancreas and liver
  • D. none of these

  • Correct Answer
  • heart and liver 


  • TCA Cycle problems


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    • 1. The enzymes of the TCA cycle in a eukaryotic cell are located in the

    • Options
    • A. nucleus
    • B. mitochondria
    • C. plasma membrane
    • D. lysosomal bodies
    • Discuss
    • 2. Which one is not the main protein in electron transport chain?

    • Options
    • A. NADH dehydrogenase
    • B. Cytochrome bc1 complex
    • C. Cytochrome oxidase
    • D. Citrate synthease
    • Discuss
    • 3. The end product of glycolysis is pyruvate, which enters the citric acid cycle after being converted to

    • Options
    • A. acetic acid
    • B. acetyl-CoA
    • C. acetaldehyde
    • D. none of these
    • Discuss
    • 4. Most of the enzymes of the citric acid cycle in a eukaryotic cell are located in the

    • Options
    • A. inner mitochondrial membrane
    • B. cytosol
    • C. mitochondrial matrix
    • D. intermembrane space
    • Discuss
    • 5. Important function of cholesterol is to

    • Options
    • A. modulate fluidity
    • B. enhance blood circulation
    • C. prevent bile salts formation
    • D. None of these
    • Discuss
    • 6. Why is the TCA cycle the central pathway of metabolism of the cell?

    • Options
    • A. It occurs in the center of the cell
    • B. Its intermediates are commonly used by other metabolic reactions
    • C. All other metabolic pathways depend upon it
    • D. None of the above
    • Discuss
    • 7. The first intermediate in TCA cycle is

    • Options
    • A. succinate
    • B. fumerate
    • C. citrate
    • D. malate
    • Discuss
    • 8. Cholesterol can be synthesized de novo in

    • Options
    • A. pancreas
    • B. intestine
    • C. liver
    • D. cell membrane
    • Discuss
    • 9. How many ATPs are produced during citric acid cycle?

    • Options
    • A. 10
    • B. 13
    • C. 12
    • D. 8
    • Discuss
    • 10. 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


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