An enzyme catalyzes the following reaction: A --> B + C In a series of experiments, the following results were obtained: substance Z inhibits the enzyme if the concentration of Z is low and A is high:...

An enzyme catalyzes the following reaction: A  -->  B + C In a series of experiments, the following results were obtained: substance Z inhibits the enzyme if the concentration of Z is low and A is high:  the reaction proceeds rapidly and B and C are formed if the concentration of Z is increased slowly: the reaction will begin to slow down regardless of whether A has a high or low concentration if the concentration of Z is higher than A: the reaction stops completely substance Z alters the shape of the enzyme upon binding rendering the enzyme useless

Using the information above, answer the questions below.   Use the word bank for a subquestion when provided.

Substance Z is a
__
inhibitor.  (word bank: competitive, noncompetitive)   What letter in the above equation represents the enzyme?  (word bank: A, B, C, none)