Enzyme Y Is a Component of a Metabolic Pathway and Is

Multiple Choice

Enzyme Y is a component of a metabolic pathway and is inhibited by a metabolite produced at the end of that particular metabolic pathway.Which statement would not be true regarding this enzyme?

A) This enzyme regulates the pathway through a feedback inhibition mechanism.
B) This enzyme may also be activated by metabolites of another pathway.
C) Levels of this enzyme may be regulated at the level of transcription of its gene.
D) This enzyme uses competitive inhibition as a mechanism for its regulation by downstream metabolites in the pathway.
E) This enzyme is very likely involved in the first commitment step of the metabolic pathway mentioned in the question.