Fermentation Pyruvate

Fermentation Pyruvate - Fermentation will replenish NAD...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
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.
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

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....
View Full Document

This note was uploaded on 04/16/2010 for the course BIS 103 taught by Professor Abel during the Spring '08 term at UC Davis.

Ask a homework question - tutors are online