BI-171
Lock-and-key model
Biology · Secondary 3 · Medium · Lock-and-key model
Which statement correctly describes the lock-and-key model of enzyme action?
- The enzyme changes shape permanently to fit any substrate.
- The substrate’s shape is unimportant for binding to the enzyme.
- The active site has a specific shape that fits only one type of substrate.
- The enzyme and substrate have identical overall shapes.
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