Discussion
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- Question
How many CO2 molecules are exhaled for each O2 molecule utilized in cellular respiration?
Options- A. 1
- B. 3
- C. 6
- D. 12
- Correct Answer
- 1
- 1. In aerobic respiration, the compound that enters a mitochondrion is
Options- A. acetyl CoA
- B. pyruvate
- C. phosphoglyceraldehyde
- D. oxaloacetate Discuss
- 2. 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
- 3. The irreversibility of the thiokinase reactions (formation of initial acyl-CoA)
Options- A. make this activation reaction the committed step on the pathway
- B. is due to the subsequent hydrolysis of the product
- C. applies only to even-chain fatty acids
- D. both (a) and (b) Discuss
- 4. How many molecules of acetyl-CoA are produced in oxidation of palmitic acid (C16), which involves seven rounds of oxidation?
Options- A. 6
- B. 7
- C. 8
- D. 9 Discuss
- 5. The three identical b subunits of the F1, complex during ATP synthesis have
Options- A. different affinities for ATP but not for ADP
- B. different affinities for ADP but not for ATP
- C. different affinities for ATP and for ADP
- D. similar affinities for ADP and ATP Discuss
- 6. 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
- 7. 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
- 8. 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
- 9. 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
- 10. During glycolysis, electrons removed from glucose are passed to
Options- A. FAD
- B. NAD+
- C. acetyl CoA
- D. pyruvic acid Discuss
Oxidative Phosphorylation problems
Search Results
Correct Answer: pyruvate
Correct Answer: Direct transfer of phosphate from a substrate molecule to ADP
Correct Answer: both (a) and (b)
Correct Answer: 8
Correct Answer: different affinities for ATP and for ADP
Correct Answer: a lipid-soluble electron carrier
Correct Answer: all of these
Correct Answer: oxygen
Correct Answer: all of the above
Correct Answer: NAD+
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