2 molecules of three carbon pyruvic acid is formed from one molecule of glucose (6-carbon) at the end of glycolysis. There is a net gain of 8 ATP molecules as a result of glycolysis.
Glycolysis is a cytoplasmic pathway which breaks down glucose into two three-carbon compounds and generates energy. Glucose is trapped through phosphorylation, with the assist of the enzyme hexokinase. Adenosine triphosphate (ATP) is used in this reaction and the product, glucose-6-P, inhibits hexokinase.
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