Enzyme Inhibition Quiz

What is the primary role of an enzyme in a biochemical reaction?

• To inhibit the reaction

• To catalyze the reaction

• To act as a substrate

• To slow down the reaction

Which type of inhibitor binds directly to the active site of an enzyme?

• Allosteric inhibitor

• Non-competitive inhibitor

• Uncompetitive inhibitor

• Competitive inhibitor

How does a competitive inhibitor affect the Km of an enzyme?

• Increases Km

• Decreases Km

• Decreases Vmax

• No effect on Km

What happens to the Vmax of an enzyme when a competitive inhibitor is present?

• Vmax becomes zero

• Vmax remains unchanged

• Vmax decreases

• Vmax increases

What is the effect of an uncompetitive inhibitor on the Vmax of an enzyme?

• Increases Km

• Decreases Vmax

• No effect on Vmax

• Increases Vmax

How does an uncompetitive inhibitor affect the Km of an enzyme?

• Increases Km

• Increases Vmax

• Decreases Km

• No effect on Km

Where do non-competitive inhibitors bind on an enzyme?

• Active site

• Substrate site

• A site distinct from the active site

• Allosteric site

What is the effect of a non-competitive inhibitor on the Km of an enzyme?

• Increases Vmax

• No effect on Km

• Decreases Km

• Increases Km

Which type of inhibitor decreases both Km and Vmax?

• Uncompetitive inhibitor

• Competitive inhibitor

• Allosteric inhibitor

• Non-competitive inhibitor

What is the overall goal of enzyme inhibition by different mechanisms?

• To increase enzyme efficiency

• To decrease enzyme efficiency

• To increase substrate concentration

• To increase Vmax