BI-73
Lock-and-key model
Biology · Secondary 3 · Medium · Lock-and-key model
Which statement best explains why only a small amount of enzyme is needed to catalyse a reaction involving many substrate molecules?
- Each enzyme molecule is used up after one reaction.
- Enzymes are permanently attached to the products.
- Enzymes are regenerated by the substrate molecules.
- Enzymes remain unchanged and can be reused.
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