How can electron transport be described and diagrammed?

Electron transport refers to the series of protein complexes and mobile electron carriers in the inner mitochondrial membrane that facilitate the transfer of electrons derived from NADH and FADH2 to oxygen, ultimately forming water. This process is coupled with the pumping of protons (H+) across the membrane, creating a proton gradient that drives ATP synthesis via ATP synthase. Diagrammatically, it can be represented as a series of complexes (I-IV) connected by electron carriers (ubiquinone and cytochrome c), with arrows indicating the flow of electrons and protons moving across the membrane.