Within the mitochondrion, the proton gradient develops across the:
Correct answer: B. Inner membrane
- A. Outer membrane
- B. Inner membrane
- C. Intermembrane space
- D. Matrix
Explanation
The inner membrane of the mitochondrion is where the proton gradient develops. It is impermeable to protons, creating a barrier that allows for the establishment of a proton gradient during the electron transport chain and oxidative phosphorylation.
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About Bioenergetics
Cellular respiration explains how cells release energy from glucose through glycolysis, the link reaction, Krebs cycle and electron transport chain. It includes ATP production, substrate-level and oxidative phosphorylation, aerobic versus anaerobic respiration, and the roles of mitochondria, oxygen and fermentation in energy transfer.
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