What Conclusion Can Be Drawn Concerning an Inhibitor If the KM

Multiple Choice

What conclusion can be drawn concerning an inhibitor if the KM is the same in the presence and absence of the inhibitor?

A) The inhibitor binds to the substrate.
B) The inhibitor has a structure that is not very similar to the substrate.
C) The inhibitor forms a reversible covalent bond with the enzyme.
D) The inhibitor binds to the same active site as the substrate.
E) The Vmax is larger in the presence of the inhibitor.