Concept
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Electron Transport Chain
The electron transport chain
The electron transport chain is a series of electron transporters embedded in the inner mitochondrial membrane that shuttles electrons from NADH and FADH2 to molecular oxygen. In the process, protons are pumped from the mitochondrial matrix to the intermembrane space, and oxygen is reduced to form water.
Source
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"OpenStax College, Oxidative Phosphorylation. October 16, 2013."
http://cnx.org/content/m44437/latest/Figure_07_04_01.jpg
OpenStax CNX
CC BY 3.0.