select the correct answer. which product of the electron transport chain reenters the krebs cycle?\na…

select the correct answer. which product of the electron transport chain reenters the krebs cycle?\na. atp\nb. coa\nc. nad+\nd. nadh\ne. pyruvate

select the correct answer. which product of the electron transport chain reenters the krebs cycle?\na. atp\nb. coa\nc. nad+\nd. nadh\ne. pyruvate

Answer

Answer:

C. NAD⁺

Brief Explanation:

During the electron - transport chain, NADH donates electrons and is oxidized back to NAD⁺. This NAD⁺ can then re - enter the Krebs cycle to participate in further oxidation of acetyl - CoA. ATP is an end - product of cellular respiration, CoA is involved in the formation of acetyl - CoA for the Krebs cycle but not a product of the electron transport chain re - entering it, NADH is consumed in the electron transport chain, and pyruvate is converted to acetyl - CoA before the Krebs cycle and is not a product of the electron transport chain re - entering the Krebs cycle.