<Dl> <Dd> Glucose + 2 NAD + 2 P + 2 ADP → 2 pyruvate + 2 NADH + 2 ATP + 2 H + 2 H O + heat </Dd> </Dl> <Dd> Glucose + 2 NAD + 2 P + 2 ADP → 2 pyruvate + 2 NADH + 2 ATP + 2 H + 2 H O + heat </Dd> <P> Starting with glucose, 1 ATP is used to donate a phosphate to glucose to produce glucose 6 - phosphate . Glycogen can be converted into glucose 6 - phosphate as well with the help of glycogen phosphorylase . During energy metabolism, glucose 6 - phosphate becomes fructose 6 - phosphate . An additional ATP is used to phosphorylate fructose 6 - phosphate into fructose 1, 6 - disphosphate by the help of phosphofructokinase . Fructose 1, 6 - diphosphate then splits into two phosphorylated molecules with three carbon chains which later degrades into pyruvate . </P> <P> Glycolysis can be literally translated as "sugar splitting". </P>

At the end of pyruvate oxidation acetyl–coa is phosphorylated into atp