When glucose is catabolized to pyruvate during glycolysis, most of the energy is stored in the form of NADH and ATP.

Here's a breakdown:

* ATP: While glycolysis does produce a net gain of 2 ATP molecules, this is a relatively small amount compared to the total energy released from glucose.

* NADH: The oxidation of glucose involves the reduction of two molecules of NAD+ to NADH. NADH is a high-energy electron carrier that will later donate its electrons in the electron transport chain, generating a significant amount of ATP.

Therefore, while glycolysis produces some ATP, the majority of the energy from glucose is stored within the high-energy electrons carried by NADH.