9 Multiple Choice 1 point In the absence of oxygen, how is the NADH formed by the glyceraldehyde-3-phosphate dehydrogenase reaction recycled to form NAD+? The NADH is oxidized in the ETC. Pyruvate is reduced to lactate or ethanol and this is coupled to oxidation of NADH. The NADH is oxidized to NAD+ during oxidative phosphorylation. The NADH is re-oxidized during the pyruvate dehydrogenase reaction. The NADH is all oxidized by anabolic reactions in the cell. Clear my selection
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This points to anaerobic conditions, i.e., fermentation. Step 2: Evaluate each option in the context of anaerobic conditions. * **Option 1: "The NADH is oxidized in the ETC."** The Electron Transport Chain (ETC) requires oxygen as the final electron Show more…
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