The enzyme has an active site which
A)fits the substrate exactly.
B)fits the transition state.
C)may contain hydrogen bonds which are covalent-like.
D)A and C.
E)B and C.

Question

Quizplus · Accepted Answer

The active site of an enzyme is known to fit the transition state of the substrate rather than the substrate itself. This is known as the lock-and-key model, which proposes that the shape of the active site matches that of the transition state of the substrate, rather than its shape. Additionally, the active site may contain hydrogen bonds, which are covalent-like in nature, thereby helping to stabilize the transition state. Thus, the best choice would be option E, which includes both options B and C.

The Enzyme Has an Active Site Which