Enzymes Review

1. The following explains the difference between peroxidase and manganese dioxide
a) they have opposite effects on the chemical decomposition of hydrogen peroxide
b) one is an enzyme and the other is a chemical catalyst
c) bring about different rates of reaction
d) all of the above

2. State at least three characteristics of enzymes.

3. All EXCEPT one of the following are characteristics of an enzyme
a) lower the activation energy (b) can be used in many different chemical reactions (c) involved in but not changed by the reaction (d) allow chemical reactions to occur at moderate temperatures

4. What term refers to the amount of energy needed to begin a chemical reaction?

5. An enzyme reduces the _____ of a chemical reaction.

6. Explain how changing the pH and/or salt concentration of a solution containing an enzyme can destroy the enzyme activity.

7. Explain how heat can sometimes destroy enzyme activity.

8. Using an example, describe how most enzymes are named.

9. The area on the enzyme which acts as a "docking site" as it matches up to the substrate molecule is
a) the catalyst (b) the reactant (c) the peptide bond (d) the active site (e) docking site

10. How is it that an enzyme has only one "specific" function?

11. Discuss the importance of enzymes to the life of a cell?