The organelle primarily used during the process of cellular respiration is the mitochondrion, often referred to as the powerhouse of the cell. Mitochondria are the sites where the biochemical processes of respiration and energy production occur.
During cellular respiration, cells convert glucose and oxygen into energy in the form of ATP (adenosine triphosphate), water, and carbon dioxide. This process involves several stages, including glycolysis, the Krebs cycle, and the electron transport chain, all of which take place within the mitochondria.
In essence, mitochondria play a critical role in breaking down nutrients and producing energy, making them essential for the survival and functioning of aerobic organisms.