Biology · Bioenergetics

The end product of glycolysis is two molecules of pyruvate(3C compound). Glycolysis is the first stage of cellular respiration, and it takes place in the cytoplasm of the cell. During glycolysis, one molecule of glucose (a six-carbon sugar) is broken down into two molecules of pyruvate (each containing three carbon atoms).

A) ADP: ADP (adenosine diphosphate) is not the end product of glycolysis. Glycolysis is the process by which glucose is broken down into pyruvate molecules, releasing energy in the form of ATP (adenosine triphosphate) molecules.

B) Reduced FAD: FAD (flavin adenine dinucleotide) is involved in the electron transport chain, not in glycolysis. Glycolysis primarily produces ATP and pyruvate molecules.

C) Citric acid: Citric acid is a molecule that is part of the citric acid cycle (also known as the Krebs cycle) which occurs after glycolysis. It is not the end product of glycolysis itself.

D) Pyruvate: The correct answer is pyruvate. Pyruvate is the end product of glycolysis. During glycolysis, one molecule of glucose is broken down into two molecules of pyruvate, generating ATP and NADH in the process.