The following questions are based on the reaction A + B → C + D shown in Figure 8.2.

-How does a noncompetitive inhibitor decrease the rate of an enzyme reaction?
A)by binding at the active site of the enzyme
B)by changing the shape of a reactant
C)by changing the free energy change of the reaction
D)by acting as a coenzyme for the reaction
E)by decreasing the activation energy of the reaction

Question

The following questions are based on the reaction A + B → C + D shown in Figure 8.2.

-How does a noncompetitive inhibitor decrease the rate of an enzyme reaction?
A)by binding at the active site of the enzyme 
B)by changing the shape of a reactant 
C)by changing the free energy change of the reaction 
D)by acting as a coenzyme for the reaction 
E)by decreasing the activation energy of the reaction

Quizplus · Accepted Answer

A noncompetitive inhibitor binds to a site other than the active site of the enzyme, changing the shape of the enzyme and making it less efficient in catalyzing the reaction. This can decrease the rate of the reaction by slowing down the formation of the product(s).

The Following Questions Are Based on the Reaction a