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Which of these statements is incorrect?

1. Enzymes of TCA cycle are present in mitochondrial matrix
2. Glycolysis occurs in cytosol
3. Oxidative phosphorylation takes place in outer mitochondrial membrane
4. Glycolysis operates as long as it is supplied with NAD that can pick up hydrogen atoms

Correct answer: Oxidative phosphorylation takes place in outer mitochondrial membrane

Solution

Oxidative phosphorylation occurs on the inner mitochondrial membrane, where the electron transport chain and ATP synthase are located. The outer membrane is not the site of this process, so that statement is incorrect.

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