Answer:
Phosphorylation
Explanation:
Phosphorylation is one of the metabolic stages of cellular respiration. It happens only in the presence of oxygen (aerobic beings), which is necessary to oxidize intermediate molecules and participate in reactions to form the ATP molecule and produce energy.
In the early stages of cellular respiration (glycolysis and Krebs cycle), some of the energy produced in the breakdown of compounds is stored in intermediate molecules, coenzymes such as NAD + and FAD +.
This oxidation energy of coenzymes is used for ATP synthesis. For this occurs phosphorylation of ADP, ie it receives phosphate groups. This is why this process is called Oxidative Phosphorylation.
