You Observe an Enzymatic Reaction That Exhibits a Standard Relationship

Multiple Choice

You observe an enzymatic reaction that exhibits a standard relationship between reaction rate and substrate concentration as it converts substrate B to product C.When you add compound A, the creation of product C comes to a complete stop.You add large quantities of substrate B but still are unable to create product C in the presence of compound A.Compound A is therefore most likely a

A) noncompetitive inhibitor.
B) competitive inhibitor.
C) coenzyme.
D) cofactor.
E) transcription factor.