Respiration is the biological process through which cells produce energy by releasing carbon dioxide and intaking oxygen.
Oxidation of complex organic substances occurs during respiration.
The energy released is in the form of ATP.
ATP:
All living things contain the energy-carrying molecule adenosine triphosphate (ATP) in their cells. The chemical energy released when food is broken down is captured by ATP.
Respiration turns stored energy in glucose molecules into energy that cells can utilize.
To release energy in the form of ATP, respiration entails the utilization of enzymes and energy to break down the glucose molecules taken up by the food via the glycolysis route.