Enzyme Y Is a Component of a Metabolic Pathway and Is

question 141

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.

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