What happens to a six-carbon molecule of glucose during glycolysis

During glycolysis, glucose is converted to fructose through rearrangement of its atoms. Two phosphate molecules are then added to fructose at carbon number 1 and 6 to form fructose 1,6 biphosphate.

The phosphorylated fructose molecule then splits into 3-carbon molecules to form a couple of glucose - 3 - phosphate (G3P) molecules, each of which gains another phosphate molecule.

The two G3P molecules finally transfer their phosphate molecules to electron carriers and are reduced to form pyruvate. Thus glucose is converted to pyruvate.