The active site of an enzyme:
A) is a series of amino acids which bind the enzyme.
B) is a linear sequence of amino acids that react with each other.
C) binds covalently to the substrate.
D) allows water to enter into the active site and thereby solvate the substrate.
E) None of the above.

Question

Quizplus · Accepted Answer

The active site of an enzyme is a specific region that binds to the substrate non-covalently, not covalently as stated in option C. It is not merely a linear sequence of amino acids that react with each other (B), nor is it primarily for allowing water to solvate the substrate (D). It is also not a series of amino acids that bind the enzyme itself (A); rather, it is part of the enzyme that interacts with the substrate.

The Active Site of an Enzyme