Answer: The correct answer for the fill in the blank is ATP.
ATP ( adenosine triphosphate) is considered as the energy currency of the cell. The energy captured from the food by the living organisms is stored in ATP. It a high energy containing molecule. The energy is stored in its high energy chemical bonds, called as phosphoanhydride bonds ( between phosphate molecules).
Whenever the body requires energy, hydrolysis of ATP takes place ( ATP is converted to ADP and inorganic phos[phate). This results in the release of the stored energy.
Thus, most potential energy captured from food molecules is stored as ATP.
