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TCA Cycle (Biochemistry) Question and Answers-Page first

TCA Cycle problems


  • 1. The FADH2 and NADH produced by the oxidation of one acetyl-CoA results in the synthesis of about-

  • Options
  • A. 3 ATPs
  • B. 6 ATPs
  • C. 11 ATPs
  • D. 15 ATPs
  • Discuss
  • 2. Energy that is released from glucose during respiration but not transferred to ATP bonds can be detected as

  • Options
  • A. CO2
  • B. AMP
  • C. ADP
  • D. heat
  • Discuss
  • 3. In what form does the product of glycolysis enter the TCA cycle?

  • Options
  • A. AcetylCoA
  • B. Pyruvate
  • C. NADH
  • D. Glucose
  • Discuss
  • 4. To stop ATP synthesis which chemical is generally used?

  • Options
  • A. DNSA
  • B. 2,4 dinitrophenol
  • C. DDT
  • D. None of the chemical can stop ATP synthesis
  • Discuss
  • 5. A positive redox potential means substance has

  • Options
  • A. lower affinity for electron
  • B. higher affinity for electron
  • C. lower affinity for proton
  • D. higher affinity for proton
  • Discuss
  • 6. The catabolism of sugars and fatty acids is similar because

  • Options
  • A. both of these compounds are funnelled through the TC A/citric acid cycle
  • B. both of these compounds generate redox energy during catabolism
  • C. both of these compounds generate chemical energy during catabolism
  • D. all of the above
  • Discuss
  • 7. In eukaryotes, electron transport occurs in

  • Options
  • A. membranes and mitochondria
  • B. endoplasmic reticulum
  • C. cytoplasm
  • D. all of the above
  • Discuss
  • 8. Which of the following is involved in energy production?

  • Options
  • A. Generation of proton gradients across membranes
  • B. Transport of electrons on organic molecules
  • C. Conversion of compounds with high energy to those of low energy
  • D. All of the above
  • Discuss
  • 9. Oxidation of a molecule involves

  • Options
  • A. gain of electron
  • B. loss of electron
  • C. gain of proton
  • D. loss of proton
  • Discuss
  • 10. Standard redox potential for a substance is measured under standard condition and is expressed as

  • Options
  • A. mili-Ampere
  • B. Volt
  • C. without unit
  • D. Ohm
  • Discuss

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