Use the Following Information to Answer the Corresponding Questions)

question 37

Multiple Choice

Use the following information to answer the corresponding questions) .
A series of enzymes catalyze the reaction X -Y -Z -A. Product A binds to the enzyme that converts X to Y at a position remote from its active site. This binding decreases the activity of the enzyme.
-With respect to the enzyme that converts X to Y, substance A functions as

• A) a competitive inhibitor.
• B) an allosteric inhibitor.
• C) an intermediate.
• D) the substrate.
• E) a coenzyme.