Biology 12: Enzymes Mr. Kruger
Enzymes: Important Learning Outcomes
1. What is the importance of enzymes in the body?
2. Where are enzymes synthesized?
3. What is their molecular structure and chemical make up?
4. What is the function of enzymes in cells?
5. How do enzymes lower the activation energy of a reaction?
6. Give five specific examples of enzymes.
7. Identify four characteristics of enzymes.
8. What affect do the following conditions have on enzymes?
Biology 12: Enzymes Mr. Kruger
a) pH
b) temperature
c) competitive inhibitors
d) non-competitive inhibitors
Biology 12: Enzymes Mr. Kruger
9. What are the optimum temperatures and pH for enzymes to work in our bodies?
10. What are the 3 ways that an apoenzme (the protein portion) is denatured?
11. Sketch and describe the graphs describing enzyme action from this section (basic enzyme effect on activation energy, relationship of enzyme and substrate concentration on product formation, temperature & pH) Why isn’t the temperature graph symmetrical?
12. Explain the lock and key analogy.
13. Another more recent explanation of enzyme action is the "induced fit" theory. Describe the basics of this theory.
14. What is an active site, and how can it be changed?
15. What are co-enzymes? How do they affect the functioning of enzymes?
16. Describe how competitive inhibitors can affect enzymes.
17. Describe how non-competitive inhibitors can affect enzymes.
18. What is the role of thyroxin in the body? Where is it made?
19. Describe the difference between the following:
a) potential and kinetic energy
b) ADP and ATP
c) degradative reaction (catabolic) and synthetic reactions (anabolic)
15. Identify the three things that are needed for all metabolic reactions.
16. Describe the difference between competitive and non-competitive inhibitors. Describe how each one works to alter an enzymes function.
17. How is the level of thyroxin controlled and maintained in the blood?