The correct answer is "to break down ATP." Organisms need to obtain energy in order to carry out various biological processes, and the primary energy currency in cells is adenosine triphosphate (ATP). Cellular respiration is the process by which organisms break down organic molecules, such as glucose, to produce ATP. It occurs in the mitochondria of the cell and involves a series of reactions, including glycolysis and the citric acid cycle. Through cellular respiration, organisms are able to release the energy stored in the bonds of organic molecules and use it to perform vital functions, such as growth, reproduction, and maintaining cellular activities. To find the answer, it is necessary to understand the concept of ATP as the energy currency of cells and the role of cellular respiration in producing ATP.
