Here's a breakdown:
* Cellular respiration is the process by which cells break down glucose (a sugar) in the presence of oxygen to release energy in the form of ATP (adenosine triphosphate).
* Glucose is a high-energy molecule, and its breakdown involves a series of chemical reactions that release free energy.
* ATP is a molecule that acts as the energy currency of cells. It is produced during cellular respiration and used by cells to power various processes.
Therefore, the breakdown of glucose during cellular respiration is an example of a chemical reaction that releases free energy.