Page 173 - PG 101-Course notes مذكرة النظري 24-25 with spec

Medicinal plants (PG 101) Level 1 Clinical Pharmacy-PharmD

4- ELECTRON TRANSPORT CHAIN AND OXIDATIVE

PHOSPHORYLATION

 Like a series of power converters, the electron transport chain takes the energy

placed in NADH and FADH2 and uses it to charge ADP into ATP. This happens

in a series of nine steps in the inner membrane of the mitochondria.

 The first charged molecule to enter the electron transport chain is NADH. NADH

charges a flavoprotein at the beginning of the electron transport chain. This

flavoprotein then sends its energy down a set of enzymatic steps, releasing a little

energy during each step until cytochrome a3 takes the last bit of energy to produce
O2. I bet you did not know that you made O2. Unfortunately, this O2 is quickly

hydrolyze, picking up H2 to form H2O.

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