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During the latter stages of glycolysis

During the latter stages of glycolysis - glycolysis is the...

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During the latter stages of glycolysis, four ATP molecules are synthesized using the  energy given off during the chemical reactions. Thus, four ATP molecules are  synthesized and two ATP molecules are inserted into the process for a net gain of two  ATP molecules in glycolysis. Also during glycolysis, another of the reactions yields enough energy to convert NAD to  NADH.  The reduced coenzyme (NADH) will later be used in the electron transport  system, and its energy will be released. During glycolysis, two NADH molecules are  produced.  As glycolysis does not use oxygen, the process is considered to be  anaerobic.  For  certain anaerobic organisms, such as certain bacteria and fermentation yeasts, 
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Unformatted text preview: glycolysis is the sole source of energy. It is a somewhat inefficient process because much of the cellular energy remains in the two molecules of pyruvic acid. The Krebs cycle. Following glycolysis, the mechanism of cellular respiration then involves another multistep process called the Krebs cycle , also called the citric acid cycle and the tricarboxylic acid cycle. The Krebs cycle uses the two molecules of pyruvic acid formed in glycolysis and yields high-energy molecules of NADH and FADH and some ATP and carbon dioxide (Figure 1 )....
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