Question:medium
The complex II of mitochondrial electron transport chain is also known as:
The complex II of mitochondrial electron transport chain is also known as:
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Complex II, or succinate dehydrogenase, directly links the citric acid cycle to the electron transport chain by transferring electrons from succinate to ubiquinone (Q), bypassing complex I.
Updated On: Nov 26, 2025
- Succinic dehydrogenase
- Cytochrome c oxidase
- NADH dehydrogenase
- Cytochrome bc1
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The Correct Option is A
Solution and Explanation
Complex II, also designated succinate dehydrogenase, is a key enzyme in both the citric acid cycle (Krebs cycle) and the electron transport chain. It facilitates the oxidation of succinate to fumarate and simultaneously transfers electrons to the electron transport chain. Therefore, the correct designation is Succinic dehydrogenase.
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