BI-1208
Lock-and-key model
Biology · Secondary 4 · Medium · Lock-and-key model
An enzyme that digests starch has no effect on protein. Which statement explains this using the lock-and-key model?
- Protein molecules do not have a shape that fits the enzyme’s active site.
- The enzyme is used up by the starch.
- Protein molecules are too small to reach the enzyme.
- The active site changes shape to push protein away.
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