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
Correct Answer: 11 ATPs
- 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
Correct Answer: heat
- 3. In what form does the product of glycolysis enter the TCA cycle?
Options- A. AcetylCoA
- B. Pyruvate
- C. NADH
- D. Glucose Discuss
Correct Answer: AcetylCoA
- 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
Correct Answer: 2,4 dinitrophenol
- 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
Correct Answer: higher affinity for electron
- 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
Correct Answer: both of these compounds are funnelled through the TC A/citric acid cycle
- 7. In eukaryotes, electron transport occurs in
Options- A. membranes and mitochondria
- B. endoplasmic reticulum
- C. cytoplasm
- D. all of the above Discuss
Correct Answer: membranes and mitochondria
- 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
Correct Answer: All of the above
- 9. Oxidation of a molecule involves
Options- A. gain of electron
- B. loss of electron
- C. gain of proton
- D. loss of proton Discuss
Correct Answer: loss of electron
- 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
Correct Answer: Volt
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