The final form of chemical energy produced by cells during cellular respiration is ATP (adenosine triphosphate).

Here's why:

* Cellular respiration is the process where cells break down glucose (sugar) in the presence of oxygen to release energy.

* This energy is not directly released as heat or light, but is captured and stored in the chemical bonds of ATP molecules.

* ATP is considered the "energy currency" of cells because it can be readily used to power various cellular processes, such as muscle contraction, active transport, and biosynthesis.

So, while cellular respiration generates energy in the form of electrons and proton gradients, the final output that cells can directly use is ATP.