Oxidative phosphorylation Quiz
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5 questions, one answer each
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1. What do the electrons passing along the chain release?
- A. Energy used to pump protons
- B. Carbon dioxide
- C. Glucose
- D. Pyruvate
2. Where is the concentration of protons highest during oxidative phosphorylation?
- A. In the matrix
- B. In the cytoplasm
- C. In the intermembrane space
- D. In the nucleus
3. ATP synthase makes ATP when:
- A. Electrons pass into it
- B. Protons flow through it down their gradient
- C. Oxygen binds to it
- D. NAD binds to it
4. What is formed when oxygen accepts electrons at the end of the chain?
- A. Carbon dioxide
- B. Hydrogen peroxide
- C. Lactate
- D. Water
5. What would happen to the pH of the intermembrane space if the electron transport chain stopped?
- A. It would fall
- B. It would rise as the proton gradient is lost
- C. It would stay the same, since protons are made by ATP synthase
- D. It would fall more quickly