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Unformatted text preview: Fermentation to lactate and ethanol regenerates NAD so that glycolysis can continue. Anaerobic glycolysis results in the net production of 2 ATP. (3 ATP are produced when glycogen is the starting material.) In the __presence__ of adequate oxygen pyruvate is channeled into the Krebs cycle (in mitochondria) , by being converted to acetyl CoA. Because pyruvate is a 3-carbon compound and glucose is a 6-carbon compound, there are two "turns" of the Krebs cycle per glucose molecule. CO 2 , ATP and reducing power , NADH and FADH 2 are produced. The NADH and FADH 2 , in the mitochondrion , through the electron transport chain and oxidative phosphorylation are used to produce ATP. It is at this step that oxygen is used (to produce H 2 0). 3 ATP are produced per NADH. 2 ATP are produced per FADH 2 . Under aerobic conditions a net _36__ to __38___ molecules of ATP are produced per glucose molecule ....
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- Spring '07