A) both at the oxidation of pyruvate to acetyl CoA, and in the Krebs cycle.
B) during the Krebs cycle as intermediate molecules are rearranged.
C) each time ATP synthase phosphorylates ADP.
D) as pyruvate is oxidized to form acetyl CoA.
E) when the glucose is initially broken apart in glycolysis.

A) None of the answer choices are correct.
B) mitochondrion.
C) Golgi body.
D) ribosome.
E) lysosome.

A) NADH₂ and glucose.
B) NADH and NADP.
C) NADP and FADH₂.
D) NADH and FADH₂.
E) NADP and glucose.