Which of the Following Statements Regarding Isozymes is Correct

Question

Which of the following statements regarding isozymes is correct?
A)They catalyze the same reaction but have vastly different structures.
B)They are always monomeric proteins.
C)Their differences are based upon the type of metal ions needed for catalysis.
D)They often respond to different inhibitors and activators.

Accepted Answer

Isozymes are different forms of an enzyme that catalyze the same reaction but have different physical and chemical properties. Therefore, they may respond differently to inhibitors and activators, making D the correct answer. A is incorrect because isozymes may have similar structures. B is incorrect because isozymes may be monomeric or multimeric proteins. C is incorrect because differences in isozymes are not based on the type of metal ions needed for catalysis.