BI-59
Lock-and-key model
Biology · Secondary 3 · Easy · Lock-and-key model
Which statement best describes the lock‑and‑key theory of enzyme action?
- Any enzyme can react with any substrate.
- The substrate changes shape to fit any enzyme.
- The active site fits only a specific substrate.
- Enzymes are used up and cannot be reused.
Sign in to check your answer and see the hint and the worked explanation. Free on PrepLab High.