An Enzyme Catalyzes a Substrate into a Final Product

Multiple Choice

An enzyme catalyzes a substrate into a final product. When the concentration of the final product is high enough, it binds to a regulatory site on the enzyme. This binding at the regulatory site changes the shape of the enzyme, which prevents it from binding the substrate and prevents formation of more final product. This is an example of a(n) ________.

A) posttranslational modification
B) allosteric enzyme
C) translational repressor
D) methylation