How Does a Noncompetitive Inhibitor Decrease the Rate of an Enzyme-Catalysed

question 20

Multiple Choice

How does a noncompetitive inhibitor decrease the rate of an enzyme-catalysed reaction?

• A) by binding to the active site of the enzyme, thus preventing binding of the normal substrate
• B) by binding to an allosteric site, thus changing the shape of the active site of the enzyme
• C) by decreasing the free-energy change of the reaction catalysed by the enzyme
• D) by binding to the substrate, thus changing its shape so that it no longer binds to the active site of the enzyme

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