AP BIOLOGY

Detailed explanation-1: -Electrons from NADH and FADH2 are then transferred to molecular oxygen, coupled to the formation of an additional 32 to 34 ATP molecules by oxidative phosphorylation.

Detailed explanation-2: -Since a single NADH produces 2.5 ATP and a single FADH2 produces 1.5 ATP, it follows that 25 ATP + 3 ATP are produced by oxidative phosphorylation. Four ATP are produced before oxidative phosphorylation, which yields a maximum of 32 ATP per glucose molecule.

Detailed explanation-3: -They are produced during the Krebs cycle. These molecules are capable of further producing ATP molecules by transfer of electrons and with the enzyme ATP synthase. One NADH molecule produces 3 ATP molecules. Whereas one FADH2 molecule produces 2 ATP molecules.

Detailed explanation-4: -Carbon from breakdown is joined to oxygen to make carbon dioxide, which is a waste product. Oxaloacetate is regenerated at the end of the cycle. For each glucose that enters glycolysis, products of the citric acid cycle are 2 ATP, 6 NADH, and 2 FADH2.