Which one of the following enzymes provides a link between glycolysis and the citric acid cycle ?
Correct answer: C. Pyruvate dehydrogenase
- A. Lactate dehydrogenase
- B. Pyruvate kinase
- C. Pyruvate dehydrogenase
- D. Citrate synthase
Explanation
The pyruvate dehydrogenase complex converts glycolytic pyruvate into acetyl-CoA, which enters the citric acid cycle. Lactate dehydrogenase diverts pyruvate to lactate, while pyruvate kinase acts earlier within glycolysis.
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