It is arguable and it depends on the organism but it is around 38 ATP molecules from 1 molecule of glucose.
The complete oxidation of one molecule of glucose can yield approximately 36 to 38 ATP. This process occurs through glycolysis, the Krebs cycle, and oxidative phosphorylation. The exact number can vary based on the organism and conditions, but 36 to 38 ATP is a typical estimate.
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