|MadSci Network: Biochemistry|
Dear Carol, The cellular respiration is the process of oxidizing food molecules, like glucose, to CO2 and H2O. One of the purpose of this process is to release ATP which is used in several ways by the cell. The process occurs in two phases: 1) Glycolysis (making of pyruvic acid) 2) Oxydation of pyruvic acid to CO2 and H2O In the final stage of the cellular respiration process, the electrons are coming from reduced NADH (and reduced FADH2) and are passed off to the electron transport chain in the inner mitochondrial membrane. For a little animation, have a look at: http://www.sp.uconn.edu/~terry/images/anim/ETS.html Hope this helps, Daniel
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