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SingaporeCombined ScienceQuick questions

Biology: Cells and Human Physiology

Quick questions on The human digestive system: N(A)-Level Combined Science Biology

2short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What are the role of enzymes?
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Enzymes are biological catalysts that speed up the breakdown of food. Different enzymes work on different foods: one type breaks down starch, another breaks down proteins, and another breaks down fats. They work fast at body temperature.
What is absorption in the small intestine?
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Once food is digested into small soluble molecules, it is absorbed in the small intestine. The small intestine is well adapted for this:

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