The electron transport chain of the cellular respiration passes molecules down a series of carriers.
The electron transport chain occurs at the end of the cellular respiration , It is in this stage that most of cellular ATP generation takes place.
The electron transport chain contains many carrier proteins which are located on the inner membrane of the mitochondria. The electrons and hydrogen ions are released into the electron transport chain by NADH.
Firstly, there is generation of a proton gradient across the mitochondrial membrane, then molecular oxygen is reduced to form water and finally there is generation of ATP by the process of chemiosmosis.
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