According to Lock and Key model, the enzyme acts as:
Correct answer: A. Lock
- A. Lock
- B. Key
- C. Can act as both
- D. None
Explanation
According to the Lock and Key model, enzymes act as a "key" that specifically fits the "lock" (substrate) to catalyze a chemical reaction. This model suggests that the enzyme's active site has a specific shape that complements the shape of the substrate, like a lock and key fit.
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About Enzymes
Enzymes are biological catalysts that lower activation energy without being consumed, and their specificity is explained by the lock and key and induced fit models. Work includes the effects of temperature, pH and substrate concentration on reaction rate, plus competitive and non-competitive inhibition and how these differ.
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