Here's why:
* Oxidative: This refers to the use of electrons from the oxidation of fuel molecules (like glucose) to power the process.
* Phosphorylation: This refers to the addition of a phosphate group to ADP (adenosine diphosphate) to form ATP (adenosine triphosphate).
How it works:
1. Electron transport chain: Electrons from the oxidation of fuel molecules are passed down a chain of protein complexes embedded in the inner mitochondrial membrane.
2. Proton pumping: As electrons move down the chain, energy is released and used to pump protons (H+) across the membrane, creating a proton gradient.
3. ATP synthase: The proton gradient drives the rotation of ATP synthase, a molecular motor embedded in the membrane. This rotation is coupled to the phosphorylation of ADP to form ATP.
Let me know if you'd like more details on any of these steps!