ATP(adenosine triphosphate) is an energy-storing molecule in
cells composed of an adenosine molecule, a ribose sugar, and three phosphate groups. The energy that the mitochondria and
chloroplasts make are stored in the chemical bonds of the ATP and can be used quickly and easily by molecules.
During cellular respiration, the energy released from the breakdown of food molecules is stored in the form of
ATP. Sugar glucose is the most common food substance that cells take energy from.