The specificity of enzyme function can be explained by the "key-in-a-lock" mode of action.

Question

Quizplus · Accepted Answer

The "key-in-a-lock" analogy is often used to describe the specificity of enzyme function. Just as a key can only fit into a specific lock, an enzyme can only bind to a specific substrate due to the precise complementary shape of their active sites. This specificity is essential for enzyme catalysis, as it ensures that the enzyme only acts on the correct substrate, preventing wasteful or harmful reactions.

The Specificity of Enzyme Function Can Be Explained by the "Key-In-A-Lock