Oxidative Phosphorylation problems
- 1. FAD is reduced to FADH2 during
Options- A. electron transport phosphorylation
- B. lactate fermentation
- C. Krebs cycle
- D. glycolysis Discuss
Correct Answer: Krebs cycle
- 2. Which of the following is correct sequence of processes in the oxidation of glucose?
Options- A. Krebs cycle - glycolysis - electron transport
- B. Glycolysis - Krebs cycle - eletron transport
- C. Electron transport - Krebs cycle - glycolysis
- D. Krebs cycle - electron transport - glycolysis Discuss
Correct Answer: Glycolysis - Krebs cycle - eletron transport
- 3. In electron transport, electrons ultimately pass to
Options- A. ADP
- B. cytochrome b
- C. oxygen
- D. none of these Discuss
Correct Answer: oxygen
- 4. During electron transport, protons are pumped out of the mitochondrion at each of the major sites except for
Options- A. complex I
- B. complex II
- C. complex III
- D. complex IV Discuss
Correct Answer: complex II
- 5. What happens after glycolysis when oxygen is available as an electron acceptor?
Options- A. Pyruvate is formed
- B. NADH is produced
- C. Fermentation
- D. Oxidative phosphorylation Discuss
Correct Answer: NADH is produced
- 6. Which of the following is not a significant biological oxidizing agent?
Options- A. FAD
- B. Fe3+
- C. O2
- D. NAD+ Discuss
Correct Answer: Fe3+
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