Question

The study of enzymes also includes an examination of how the activity is regulated. Molecules that can act as competitive inhibitors for a specific reaction are often similar in shape and size to the enzyme's substrate. Which variable(s) used to describe enzyme activity will remain the same in the presence and absence of a competitive inhibitor?

(a) Vmax
(b) V
(c) Vmax and Km
(d) Km

Answer 1

Vmax and Km remain the same in the presence and absence of a competitive inhibitor.

Step-by-step explanation:

In the presence and absence of a competitive inhibitor, the variable(s) used to describe enzyme activity that will remain the same are Vmax and Km. Vmax represents the maximum rate of the catalyzed reaction, while Km represents how quickly the enzyme becomes saturated with a particular substrate.