BI-69
Lock-and-key model
Biology · Secondary 3 · Easy · Lock-and-key model
Which statement correctly describes the lock‑and‑key model of enzyme action?
- Each enzyme can bind to any substrate with enough energy.
- The substrate changes shape to fit any enzyme.
- The enzyme’s active site is specific and fits only one type of substrate.
- The enzyme and substrate have identical overall shapes.
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