The term for an energy transformation process that stores energy in cells is known as cellular respiration. This biochemical process occurs in the mitochondria, where glucose and oxygen are used to produce ATP (adenosine triphosphate), the primary energy currency of cells. During this process, energy is converted into a usable form while releasing byproducts such as carbon dioxide and water. Efficient energy storage is vital for supporting various cellular activities, including metabolism, growth, and repair.