You Are Observing an Enzyme Driven Reaction

Multiple Choice

You are observing an enzyme driven reaction. You add chemical X, which inhibits the reaction. If you add more substrate, the reaction rate approaches the V_max of the uninhibited reaction. Furthermore, the structure of X is similar to the natural substrate. What kind of inhibitor is X?

A) irreversible
B) reversible
C) competitive
D) reversible and uncompetitive
E) None of these are correct.