C6H12O6 + 6O2 → 6CO2 + 6H2O + energy (ATP)

Where:

* C6H12O6 represents glucose, the sugar molecule used as fuel.

* 6O2 represents six molecules of oxygen, the electron acceptor.

* 6CO2 represents six molecules of carbon dioxide, a waste product.

* 6H2O represents six molecules of water, another waste product.

* energy (ATP) represents the energy released and stored in the form of adenosine triphosphate (ATP).

This equation is a simplified representation of a complex series of biochemical reactions that occur in multiple stages within the cell.