AP BIOLOGY

Detailed explanation-1: -Answer and Explanation: Pyruvate oxidation produces acetyl Coenzyme A, NADH, and carbon dioxide.

Detailed explanation-2: -Overall, pyruvate oxidation converts pyruvate-a three-carbon molecule-into acetyl CoAstart text, C, o, A, end text-a two-carbon molecule attached to Coenzyme A-producing an NADHstart text, N, A, D, H, end text and releasing one carbon dioxide molecule in the process.

Detailed explanation-3: -The CO2 will diffuse out of the cell. In addition, one molecule of NAD+ is reduced to NADH during this process per molecule of pyruvate oxidized. Upon entering the mitochondrial matrix, a multi-enzyme complex converts pyruvate into acetyl CoA.

Detailed explanation-4: -The end product of glycolysis is pyruvate. 1 molecule of glucose produces 2 molecules of pyruvate. So 1 molecule of pyruvate is responsible for the release of 2 CO2 molecules during 1 Krebs cycle.

Detailed explanation-5: -The pyruvate dehydrogenase complex (PDHC) contributes to a key metabolic reaction in the central metabolism by catalyzing the oxidative decarboxylation of pyruvate to acetyl-CoA (Fig. 1), thereby producing 1 molecule of CO2 and 1 molecule of NADH per molecule of pyruvate.