AP BIOLOGY

Detailed explanation-1: -This is a complex process in which in the first stage the pyruvic acid is converted by the process of oxidative decarboxylation into acetyl coenzyme A and CO2.

Detailed explanation-2: -Two molecules of pyruvate are converted into two molecules of acetyl CoAstart text, C, o, A, end text. Two carbons are released as carbon dioxide-out of the six originally present in glucose.

Detailed explanation-3: -Upon entering the mitochondrial matrix, a multi-enzyme complex converts pyruvate into acetyl CoA. In the process, carbon dioxide is released and one molecule of NADH is formed.

Detailed explanation-4: -After pyruvate is produced from glycolysis, it enters the mitochondria to begin aerobic respiration. Aerobic respiration begins with the conversion of pyruvate to acetyl CoA. This conversion takes place in three steps: decarboxylation, the reduction of NAD+, and the attachment of coenzyme A.

Detailed explanation-5: -Figure 4.17 Pyruvate is converted into acetyl-CoA before entering the citric acid cycle. Like the conversion of pyruvate to acetyl CoA, the citric acid cycle in eukaryotic cells takes place in the matrix of the mitochondria.