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The electron transport chain is found in the inner membrane of mitochondria, where it facilitates oxidative phosphorylation with the help of ATP synthase.

1. The ATP production in aerobic respiration (36 ATP) is 18 times greater than that in anaerobic respiration (2 ATP).
2. Enzyme activity can be reversibly inhibited by substrate-like molecules in competitive inhibition.
3. Fermentation is the breakdown of organic substances without oxygen, producing alcohol, organic acids, and gases.
4. The final products of fermentation include ethanol, lactic acid, and carbon dioxide.

Correct answer: The ATP production in aerobic respiration (36 ATP) is 18 times greater than that in anaerobic respiration (2 ATP).

Solution

Option (a) is correct because it accurately describes the energy yield difference between aerobic and anaerobic respiration, which is a key concept in oxidative phosphorylation and ATP production.

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