BI-658
Digestive enzymes
Biology · Secondary 3 · Hard · Digestive enzymes
Food that enters the small intestine contains large, insoluble starch molecules. Why must starch be digested before it can be absorbed into the bloodstream?
- Only small, soluble molecules can pass through the intestinal wall into blood.
- Starch must be removed because it is poisonous to blood cells.
- Digestion changes starch into fat, which is easier to absorb.
- Starch must be digested so that it can be stored directly in muscles.
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