The<unk>  (sometimes also the<unk><unk>  is a biochemical system for translocating electrons produced during glycolysis across the impermeable inner membrane of the mitochondrion for oxidative phosphorylation in eukaryotes. This allows the reduction equivalents of the cofactor NADH produced in the cytosol to reach the electron transport chain in the mitochondria and generate ATP. The<unk>  system is required because the inner membrane is impermeable to NADH and its oxidized form NAD+.
Malate-aspartate shuttle
Pyruvate decarboxylation
Citric acid cycle
Electron transport chain
Oxidative phosphorylation
Beta oxidation
Pyruvate dehydrogenase complex
Rabi cycle