Why does anaerobic respiration in muscle produce lactate?
Answer and explanation
Correct answer: A. Pyruvate is reduced to lactate
- Step 1: Without oxygen, the electron transport chain stops, so reduced NAD builds up. Step 2. Reducing pyruvate re-oxidises NAD, allowing glycolysis to make a small amount of ATP. Answer: Pyruvate is reduced to lactate. Why not the others: mitochondria cannot use lactate to make ATP here; oxygen is not converted into lactate; lactate is carried to the liver, not excreted immediately.
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