Enzyme Inhibitors Quiz

What is the function of enzymes?

• To block the substrate from attaching

• To compete with the substrate for the active site

• To catalyze chemical reactions

• To change the shape of the active site

What is a competitive inhibitor?

• A molecule that permanently inhibits the reaction

• A molecule that changes the shape of the active site

• A molecule that competes with the substrate for the active site

• A molecule that blocks the substrate from attaching

How can the effects of a competitive inhibitor be overcome?

• By attaching to the allosteric site

• By changing the shape of the active site

• By decreasing the amount of substrate

• By increasing the amount of substrate

What is an allosteric inhibitor?

• A molecule that changes the shape of the active site

• A molecule that attaches to an area away from the active site

• A molecule that competes with the substrate for the active site

• A molecule that blocks the substrate from attaching

How does an allosteric inhibitor inhibit the reaction?

• By blocking the substrate from attaching

• By permanently inhibiting the reaction

• By competing with the substrate for the active site

• By changing the shape of the active site

What happens when an allosteric inhibitor attaches to the enzyme?

• The allosteric site is blocked

• The reaction is permanently inhibited

• The substrate cannot attach to the active site

• The active site changes shape

What is another name for a non-competitive inhibitor?

• Allosteric inhibitor

• Competitive inhibitor

• Reversible inhibitor

• Irreversible inhibitor

How does a non-competitive inhibitor inhibit the reaction?

• By attaching to an area away from the active site

• By blocking the substrate from attaching

• By competing with the substrate for the active site

• By changing the shape of the active site

What happens when a non-competitive inhibitor attaches to the enzyme?

• The reaction is permanently inhibited

• The substrate cannot attach to the active site

• The allosteric site is blocked

• The active site changes shape

Is an allosteric inhibitor reversible or permanent?

• Reversible

• Permanent

• Neither reversible nor permanent

• Both reversible and permanent