Answer: four (4)
Step-by-step explanation:
The two 3-carbon molecules in which glucose is split are DIHYDROXYACETONE and GLYCERALDEHYDE 3-PHOSPHATE.
These two are ISOMERS and are converted through a series of five steps into the final 3-carbon molecule called PYRUVATE, CH3COCOO
During these later steps KNOWN as the PAYOFF phase (phase II) of glycosis, FOUR (4) molecules of ATP are made.