Which statement regarding allosterically regulated enzymes is valid?

Question

Quizplus · Accepted Answer

Allosterically regulated enzymes often have more than one subunit. The subunits can be identical or different, and they each have an allosteric site that can bind regulatory molecules.

Answer: D
 Unlike substrate binding, the binding of molecules to allosteric sites in an allosteric enzyme is nonspecific. This means that a variety of molecules can bind to the allosteric site and affect enzyme activity.

The other answer choices are incorrect:
B is incorrect because allosteric enzymes can still use induced-fit mechanisms for catalyzing reactions.
C is incorrect because the allosteric regulatory site is separate from the active site in an allosteric enzyme.
E is incorrect because allosteric molecules can have both inhibitory and stimulatory effects on enzyme activity.

Which Statement Regarding Allosterically Regulated Enzymes Is Valid