An Experiment Is Carried Out in Which a Small Amount

Multiple Choice

An experiment is carried out in which a small amount of allosteric inhibitor is added to tube A and no inhibitor is added to tube B.The full reaction is completed in Tube B twice as fast as in tube A.One can conclude that the allosteric inhibitor acted by

A) decreasing the number of enzyme molecules.
B) increasing the amount of the active form of the enzyme.
C) decreasing the amount of the inactive form of the enzyme.
D) decreasing the amount of the active form of the enzyme.
E) increasing the amount of substrate.