The document summarizes glycolysis, the metabolic pathway that converts glucose into pyruvate. It defines glycolysis as the sequence of reactions that converts glucose or glycogen to pyruvate or lactate with ATP production. The pathway occurs in the cytosol of cells and produces either lactate under anaerobic conditions or pyruvate under aerobic conditions. Glycolysis is an important pathway for ATP synthesis in tissues lacking mitochondria. It also lists the enzymes involved and divides the pathway into three phases: an energy investment phase, splitting phase, and energy generation phase. The net reaction shows glucose is converted to pyruvate, ATP, NADH, and water.