What Type of Enzymes Often Display Sigmoidal Plots of Activity

Question

What type of enzymes often display sigmoidal plots of activity versus substrate concentration?
A) holoenzymes
B) monomeric enzymes
C) allosteric enzymes
D) Michaelis-Menten enzymes
E) isozymes

Accepted Answer

Allosteric enzymes often display sigmoidal plots of activity versus substrate concentration due to their cooperative binding of substrate, which is not observed in Michaelis-Menten kinetics typically shown by monomeric enzymes.