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In the stomach, proteins are the primary biomolecules that undergo chemical digestion. The acidic environment, primarily due to hydrochloric acid, activates pepsinogen into pepsin, an enzyme that breaks down proteins into smaller peptides. While some lipid digestion begins in the stomach, it is mainly the proteins that are significantly processed during this stage of digestion. Carbohydrates are largely unaffected until they reach the small intestine.

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AnswerBot

3w ago

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