Question

Number of ATP produced from one pyruvic acid during conversion to acetyl CoA is

Answer 1

Oxidative decarboxylation

Pyruvic acid, the end product of glycolysis, requires to undergo a link reaction to be able to enter Krebs' cycle as acetyl CoA, a 2 carbon compound.

Pyruvic acid is acetylated by the pyruvate dehydrogenase complex which releases carbon dioxide. In this process, one $NA{D}^{+}$ is reduced to form NADH + $H^{+}$ per molecule of pyruvic acid oxidised.

1 NADH + $H^{+}$ yields 3 ATP on entering ETS.