BSCI 1001 Chapter Notes - Chapter n/a: Addison-Wesley, Nadh Dehydrogenase, Atp Synthase
3 Aug 2016
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The electron transport chain(etc) is part of the third and final stage of cellular respiration. When it comes to making atp, the etc is the real money maker and can net 34 atps. Through glycolysis and the krebs cycle, dehydrogenases transfer electrons from substrates to nad+, forming nadh. The etc accepts the electrons from the nadh and passes these electrons from one molecule to another. At the end of the chain, the electrons are combined with molecular oxygen and hydrogen ions, forming water. The energy released at each step of the chain is stored in a form the mitochondrion can use to make atp. The etc is a collection of molecules embedded in the inner membrane of the mitochondrion in eukaryotic cells. The folding of the inner membrane to form cristae increases its surface area, providing space for thousands of copies of the chain in each mitochondrion. It then returns to its oxidized form as it passes electrons to its.
