AICE Bio Enzymes

Enzymes are an example of

• Lipids

• Carbohydrate

• Protein

• Nucleic Acid

Enzymes are capable of increasing the rate of a chemical reaction within a living cell.  Enzymes accomplish this through which of the following means?

• reducing the number of products   
• reducing the activation energy
• increasing the temperature of the cell
• increasing the concentration of reactants 

Each enzyme only has 1 substrate that will fit its active site.  What is this called?

• reusable
• catalyst
• specific
• fragile

What 3 letters do enzymes typically end in?

• -ose
• -ase
• -ese
• -tic

Which of the following is an example of irreversible inhibition?

• Competitive Inhibitor

• Non-Competitive Inhibitor

• Addition of a strong acid

• Addition of water

What will happen to the Vmax of an enzyme catalyzed reaction in the presence of a competitive inhibitor?

• The Vmax will increase

• The Vmax will decrease

• The Vmax will not change

• The substrate concentration will decrease

What will happen to the Km of an enzyme catalyzed reaction in the presence of a competitive inhibitor?

• Km will increase

• Km will decrease

• The Km will not change

• The substrate concentration will decrease

Which bonds will be the last to break as the temperature of an enzyme is increased?

• Hydrogen

• Hydrophobic Interactions

• Ionic

• Peptide

How do you calculate Km?

• Rate that is half of Vmax

• Equal to Vmax

• Substrate concentration at Vmax

• Substrate concentration at Vmax/2

The graph shows energy changes in a reaction. What is the activation energy when an enzyme is added?

• 1 + 2

• 2 only

• 3 - 2

• 4 only