AP Bio Insta-Review Topic 3.3: Environmental Impacts on Enzyme

What happens to an enzyme if the temperature increases too high?

• No effect

• Enzyme increases rate

• Enzyme decreases rate

• Enzyme denatures

What happens to an enzyme if the temperature decreases too low?

• No effect

• Enzyme increases rate

• Enzyme decreases rate

• Enzyme denatures

Tags

NGSS.HS-PS1-5

If the enzyme is denatured…

• No effect

• Reaction rate increases

• Reaction rate decreases

• Reaction stops

Enzymes get consumed by reaction and must be re-added

• True

• False

If the pH increases, why does the enzyme denature?

• pH causes the polar R groups to be nonpolar

• pH affects the charge on the carboxyl & amine groups

• pH affects the charged R groups

• pH causes hydrogen ions to act as competitive inhibitor

Inhibitor that binds to the

active site

• Competitive inhibitor

• Noncompetitive inhibitor

Any increase in heat will denature enzyme

• False

• True

As pH increases, what happens to the hydrogen ion concentration?

• Decreases

• Increases

During cellular respiration, protons are pumped from the matrix to the intermembrane space. What happens to the pH of the matrix?

• Decreases

• Increases

How do you overcome a competitive inhibitor?

• Add more ATP

• Add more inhibitor

• Add more products

• Add more reactants

Tags

NGSS.HS-PS1-5