During cellular respiration, energy is released from the chemical bonds of glucose.

Here's a breakdown:

* Glucose is a sugar molecule that serves as the primary fuel source for cellular respiration.

* Chemical bonds within the glucose molecule store potential energy.

* Cellular respiration is a series of chemical reactions that break down glucose, releasing this stored energy.

This energy is then used to create ATP (adenosine triphosphate), which is the primary energy currency of cells.