Answer: ATP molecules release chemical energy, which drives endogernic reactions
Explanation: Adenosine triphosphate is an energy carrying molecule. It is found in the cells of all living things. What it does is to trap chemical energy gotten from the breakdown of food. It then releases this energy to the various parts of the body that needs it as a fuel for other cellular processes.
It is important to note that ATP is not a storage molecule for chemical energy as glycogen and fat does the storing. It is the point when energy is needed by the cell that such energy is converted from the storage molecules into ATP.
The body recognises these small units called ATP and accepts them in places whereby there is energy depletion, especially where energy consuming activities take place.