Question

After the citric acid cycle, 1 molecule of acetyl-CoA DOES NOT generate

A) 2 molecules of CO2
B) 3 molecules of NADH
C) 1 molecule of FADH2
D) 2 molecules of H2O

Answer 1

After the citric acid cycle, one molecule of acetyl-CoA does not generate two molecules of H2O, but it does generate two molecules of CO2, three molecules of NADH, and one molecule of FADH2.

Step-by-step explanation:

After the citric acid cycle, one molecule of acetyl-CoA generates two molecules of CO2, three molecules of NADH, and one molecule of FADH2. However, it does not generate two molecules of H2O. During the cycle, each acetyl-CoA combines with oxaloacetate to form a six-carbon citrate molecule.

This molecule is then oxidized, releasing two molecules of carbon dioxide and reducing NAD+ to NADH and FAD to FADH2. One ATP or GTP is also produced by substrate-level phosphorylation, but water is not a direct product of the citric acid cycle.