The Km for an enzyme-catalyzed reaction:
A)determines the shape of the kinetics curve.
B)determines the Vmₐₓ for the reaction.
C)is a measure of the affinity of the substrate for the enzyme.
D)is a measure of the rate of the reaction.

Question

Quizplus · Accepted Answer

Km is a measure of the affinity of the substrate for the enzyme. It is defined as the substrate concentration at which the reaction rate is half of Vmₐₓ, the maximum rate of the reaction.

The Km for an Enzyme-Catalyzed Reaction