Because the composition of electron transport chain varies between species, various organisms use the electron transport chains to produce varying amounts of ATP.
The majority overall ATP synthesis takes place during cellular respiration inside the mitochondrial matrix, producing about 32 ATP molecules for every glucose molecule that is oxidized.
Nearly 90% of the ATP produced by cellular respiration is produced via oxidative phosphorylation.By substrate-level phosphorylation, less ATP is produced during glycolysis and the citric acid/Krebs Cycle.
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