What Shape is Seen in the Kinetic Plot of an Enzyme

Question

What shape is seen in the kinetic plot of an enzyme that exhibits cooperative binding?
A) sigmoidal
B) hyperbolic
C) parabolic
D) linear
E) None of the answers is correct.

Accepted Answer

Cooperative binding in enzymes, such as that seen in hemoglobin, results in a sigmoidal (S-shaped) curve on a kinetic plot. This shape reflects the increasing ease with which the enzyme binds substrate after the initial substrate molecules have been bound.