Lock & key model of enzyme action proposed by Emil Fischer suggested that.
Correct answer: A. Enzymes are restricted to one reaction type
- A. Enzymes are restricted to one reaction type
- B. Enzymes are flexible and can catalyze multiple reactions
- C. Enzymes are non-specific and can bind to any substrate
- D. Enzymes are always active
Explanation
This is the correct answer. The lock-and-key model proposed by Emil Fischer suggests that enzymes are highly specific and can only catalyze one type of reaction. This is because the active site of an enzyme has a specific shape that complements the shape of its substrate, much like a lock and key. Only the correct substrate can fit into the active site and undergo the catalyzed reaction.
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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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