👉 Oxygenization is a process by which oxygen, a chemical element with symbol O and atomic number 8, enters a cell or an organism. In this process, oxygen acts as a carrier of electrons in the cell's energy system and transports them around the cell. Oxygenation is essential for cellular respiration, where it breaks down glucose to produce ATP (adenosine triphosphate), which is the primary energy currency of all living organisms.