Explain the difference between mechanical and chemical digestion?
Question: Explain the difference between mechanical and chemical digestion?
Mechanical and chemical digestion are two integral processes of the digestive system that work together to break down food into nutrients that the body can absorb. Mechanical digestion begins in the mouth with mastication, where teeth grind food into smaller pieces, increasing its surface area. This physical breakdown continues with the churning action in the stomach. On the other hand, chemical digestion involves enzymatic reactions that break down complex molecules like proteins, lipids, and carbohydrates into simpler molecules. This process starts in the mouth with saliva and continues in the stomach and intestines with various digestive enzymes. While mechanical digestion prepares food for chemical digestion, chemical digestion is essential for the absorption of nutrients.
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