>See d-biotin information below: Glycolysis is a metabolic pathway that occurs in the cytoplasm of cells and is the first step in cellular respiration. It is a series of 10 enzyme-catalyzed reactions that convert glucose into pyruvate with the simultaneous production of ATP 1 . Here is a simplified version of the pathway: Energy investment phase : In this phase, glucose is converted to fructose-1,6-bisphosphate in a series of steps that use up two ATP molecules 2 . Energy payoff phase : In a series of steps that produce one NADH and two ATP, a glyceraldehyde-3-phosphate molecule is converted into a pyruvate molecule 2 . The amino acid carnosine plays a role in glycolytic flux, (it increases it). Carnosine is also a free radical scavenger. Link Glycolytic flux is the rate of glucose metabolism through the glycolytic pathway 1. The glycolytic pathway is a metabolic pathway that converts glucose into pyruvate, producing ATP and NADH in the process 1. The gl...