Final answer:
During cellular respiration, glucose is broken down in the mitochondria of a cell to release energy in the form of ATP. Carbon dioxide and water are produced as byproducts.
Step-by-step explanation:
The energy from glucose is broken down in the mitochondria of a cell during cellular respiration. This process releases energy in the form of adenosine triphosphate (ATP), which is the cell's main energy-carrying molecule. Glucose, in the presence of oxygen, is converted into carbon dioxide and water. Carbon dioxide is transported out of the cell and eventually exhaled, while ATP is used by the cell to perform work.