30.
A:
A competitive inhibitor and substrate can bind simultaneously to the enzyme.
B:
The Vmax and Km (Michaelis constant) for a reaction are unchanged in the presence of a competitive inhibitor.
C:
The Vmax for a reaction remains unchanged in the presence of a competitive inhibitor.
D:
The Km for a reaction remains unchanged in the presence of a competitive inhibitor
The answer is: C