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

question 46

Multiple Choice

How does a noncompetitive inhibitor decrease the rate of an enzyme-catalyzed 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 catalyzed by the enzyme
• D) by increasing the activation energy of the reaction

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Definitions:

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Fetal vessel connecting the left pulmonary artery with the descending aorta.

Pulmonary Trunk

Large, elastic artery that carries blood from the right ventricle of the heart to the right and left pulmonary arteries.

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A hormone and neurotransmitter involved in childbirth and lactation, also associated with empathy, trust, sexual activity, and relationship-building behaviors.