BI-1296
Lock-and-key model
Biology · Secondary 4 · Medium · Lock-and-key model
An enzyme breaks down a specific protein in the stomach. Which statement best explains why this enzyme does not break down starch?
- The active site of the enzyme does not fit the shape of starch molecules.
- Starch is too small to be broken down by any enzyme.
- Starch is already a product of protein digestion.
- The enzyme can only work at body temperature, not on starch.
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