Figure 16-6. The anaerobic metabolism of glucose.

Figure 16-6The anaerobic metabolism of glucose

In the formation of pyruvate from glucose, one molecule of NAD+ is reduced to NADH for each molecule of pyruvate formed (see Figure 16-3). To regenerate NAD+, two electrons are transferred from each NADH molecule to an acceptor molecule. When oxygen supplies are low in muscle cells, the acceptor is pyruvic acid, and lactic acid is formed. In yeasts, acetaldehyde is the acceptor, and ethanol is formed.

From: Section 16.1, Oxidation of Glucose and Fatty Acids to CO2

Cover of Molecular Cell Biology
Molecular Cell Biology. 4th edition.
Lodish H, Berk A, Zipursky SL, et al.
New York: W. H. Freeman; 2000.
Copyright © 2000, W. H. Freeman and Company.

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