In the process of energy metabolism, pyruvic acid is converted into lactic acid if …

1) Pyruvic acid is formed as a result of glycolysis (biological oxidation of glucose). From 1 molecule of glucose, 2 molecules of pyruvic acid are formed.
2) If during glycolysis in the cell there is a lack or absence of oxygen, then oxidative phosphorylation becomes impossible, and it is in this process that ATP is formed. For additional energy, pyruvic acid is converted to lactic acid. This process is called anaerobic (anoxic) glycolysis.



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