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Question

Which of the following enzyme participates in both the citric acid cycle and the electron transport chain?

Options

Choose one · Correct answer highlighted

Explanation

Succinate dehydrogenase catalyzes oxidation of succinate to fumarate in citric acid cycle while directly transferring electrons to FAD becoming FADH2. It is embedded in inner mitochondrial membrane as Complex II of respiratory chain, linking TCA cycle to electron transport unlike other soluble dehydrogenases.

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