Fermentation Pyruvate

Fermentation Pyruvate - Fermentation will replenish NAD...

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www.thinkwell.com [email protected] Copyright © 2000, Thinkwell Corp., All Rights Reserved. 031500bio095 The Fermentation of Pyruvate ª Review: In the process of glycolysis, a net profit of two ATP was produced, two NAD + were reduced to two NADH + H + , and glucose was split into two pyruvate molecules. ª When oxygen is not present, pyruvate will undergo a process called fermentation . In the process of fermentation the NADH + H + from glycolysis will be recycled back to NAD + so that glycolysis can continue. In the process of glycolysis, NAD + is reduced to form NADH + H + . If NAD + is not present, glycolysis will not be able to continue. During aerobic respiration, the NADH formed in glycolysis will be oxidized to reform NAD + for use in glycolysis again. When oxygen is not present or if an organism is not able to undergo aerobic respiration, pyruvate will undergo a process called fermentation . Fermentation does not require oxygen and is therefore anaerobic.
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Unformatted text preview: Fermentation will replenish NAD + from the NADH + H + produced in glycolysis. One type of fermentation is alcohol fermentation . First, pyruvate is decarboxylated (CO 2 leaves) to form acetaldehyde. Hydrogen atoms from NADH + H + are then used to help convert acetaldehyde to ethanol. NAD + results. Facultative anaerobes are organisms that can undergo fermentation when deprived of oxygen. Yeast is one example of a facultative anaerobe that will undergo alcohol fermentation. Some organisms, such as some bacteria, will undergo lactate fermentation . Two pyruvates are converted to two lactic acid molecules, which ionize to form lactate. In this process two NADH + H + are converted to two NAD + . Our muscle cells can undergo this process when they are in oxygen debt. If enough oxygen is not present to undergo aerobic respiration, pyruvate will undergo lactic acid fermentation....
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