Oxidative Phosphorylation

Oxidative Phosphorylation - Oxidative Phosphorylation The...

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Oxidative Phosphorylation The electron transport system is found in the mitochondrion and chloroplast of eucaryotes and in the plasma membrane of procaryotes. It consists of a series of carrier molecules which pass electrons from a high-energy compound to a final low-energy electron acceptor. Energy is released during these oxidation-reduction reactions to produce ATP. The discussion below applies to the mitochondria of eucaryotes. NADH or FADH 2 bring electrons to the electron transport system in the mitochondria. The system contains membrane-bound electron carriers that pass electrons from one to another. When a carrier reduces another, some of the energy that is released as a result of that reduction is used to pump hydrogen ions across the membrane into the intermembrane space. The remaining energy is used to reduce the next carrier. As a result of the electron transport system, hydrogen ions become concentrated in the intermembrane space. These concentrated ions contain energy much like a dam. The enzyme
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Oxidative Phosphorylation - Oxidative Phosphorylation The...

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