BI-1285
Lock-and-key model
Biology · Secondary 4 · Medium · Lock-and-key model
Which statement about enzymes is correct for the lock‑and‑key model?
- Each enzyme has an active site that fits only a specific substrate.
- Enzymes change shape randomly to fit any substrate.
- Substrates change shape to fit any enzyme’s active site.
- All enzymes share the same active site shape.
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