AP BIOLOGY

Detailed explanation-1: -Pyruvic acid is the end product of glycolysis. Two molecules of pyruvic acid are generated by the partial oxidation of one glucose molecule.

Detailed explanation-2: -In eukaryotic cells, the pyruvate molecules produced at the end of glycolysis are transported into mitochondria, which are the sites of cellular respiration. There, pyruvate will be transformed into an acetyl group that will be picked up and activated by a carrier compound called coenzyme A (CoA).

Detailed explanation-3: -Glycolysis is a linear metabolic pathway of enzyme-catalyzed reactions that converts glucose into two molecules of pyruvate in the presence of oxygen or two molecules of lactate in the absence of oxygen.

Detailed explanation-4: -Stage two of the glycolytic pathway involves the breakdown of fructose 1, 6-bisphosphate into two identical three-carbon molecules called glyceraldehyde 3-phosphate or simply GAP.

Detailed explanation-5: -Energy is needed at the start of glycolysis to split the glucose molecule into two pyruvate molecules. These two molecules go on to stage II of cellular respiration. The energy to split glucose is provided by two molecules of ATP.