Which statement is incorrect about Lock and Key Model________________?
Correct answer: D. It explains the mechanism of every chemical reaction
- A. Specific enzyme can transform only a specific substrate
- B. Active site of an enzyme is a non flexible structure
- C. Active site does not change before during or even after the reaction
- D. It explains the mechanism of every chemical reaction
Explanation
The lock-and-key model proposes a relatively rigid active site and specificity between an enzyme and its substrate, but it does not explain every chemical reaction. Students may choose c because the model treats the active site as unchanged, but d is the broader and incorrect claim.
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