High concentration of NADH inhibits:
Correct answer: A. Pyruvate dehydrogenase
- A. Pyruvate dehydrogenase
- B. Phosphofructokinase
- C. Glucokinase
- D. Pyruvate phosphatases
Explanation
Pyruvate dehydrogenase is responsible for converting pyruvate into acetyl-CoA. High levels of NADH inhibit this enzyme, indicating that the cell has a sufficient energy supply and reducing the need for further acetyl-CoA production.
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Cellular respiration explains how cells release energy from glucose through glycolysis, the link reaction, Krebs cycle and electron transport chain. It includes ATP production, substrate-level and oxidative phosphorylation, aerobic versus anaerobic respiration, and the roles of mitochondria, oxygen and fermentation in energy transfer.
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