Definitions for "Electron transport chain"
The third stage of cellular respiration, occurring within the inner membrane of the mitochondria, in which the majority of the ATP are formed. In this process, electrons are transported along a chain of molecules, providing energy to pump hydrogen ions against their concentration gradient. When these hydrogen ions return down their concentration gradient, the energy released drives the synthesis of up to 32 ATP per molecule of glucose.
The final stage of aerobic respiration. The electron transport chain establishes an electrochemical gradient across the inner mitochondrial membrane that powers the synthesis of ATP in oxidative phosphorylation.
Sequence of membrane-bound electron carriers, which carry electrons from an electronegative electron donor to a more electropositive acceptor. In the electron transport chains of bacterial cell membranes, mitochondria and chloroplasts this transport is coupled to the movement of protons across the membrane, forming an electrochemical gradient that powers ATP synthesis.