BI-112
Lock-and-key model
Biology · Secondary 3 · Easy · Lock-and-key model
Which statement correctly describes the **lock‑and‑key** model of enzyme action?
- Any substrate can bind to any enzyme active site.
- The enzyme changes into the shape of the substrate permanently.
- Only a substrate with a complementary shape fits the active site.
- The active site is destroyed after one reaction.
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