1. Objective: SWBAT describe the importance of enzymes by examining their roles in the human body. SAT Word: dilemma (n) a difficult or perplexing situation or problem Drill: 1. What is the monomer for proteins? 2. What is the function of a protein? 3. What is an enzyme?

2. Key Vocabulary
Enzyme
Activation Energy
Substrate
Active Site
Catalyst

3. Enzyme Lab

4. Notes Enzymes

5. What is an enzyme?
A type of protein used to speed up chemical reactions
Acts as a catalyst

6. What is a catalyst?
An enzyme that speeds up chemical reactions without being affected
Works by lowering the activation energy for the reaction

7. What is activation energy?
The energy needed to start a chemical reaction

8. Why do we need enzymes?
Without them, reactions would occur so slowly that organisms would not be able to sustain life.

9. What are some examples of enzymes?
Lactase
Catalase
Amylase
Polymerase
Do you notice a pattern?

10. What are some examples of enzymes?
Lactase
Catalase
Amylase
Polymerase
Do you notice a pattern?

11. What does –ase indicate?
The suffix –ase indicates an enzyme

12. How do enzymes work? They are very specific
They only work in certain conditions, with certain molecules
The fit with the molecules like a lock and key

13. How do they work? Cont’d Enzymes bind with molecules called substrates
They bind at the
active site
When they bind together, it alters the substrate causing a reaction
Active Site

15. What types of things can affect the functioning of an enzyme?
Temperature pH
Inhibitors (things that block
the active site)

16. Enzymes and Substrates
SUBSTRATE ENZYME
ENZYME AFTER REACTION
SUBSTRATE AFTER REACTION

19. Finish the analysis questions from the
Summary Let’s go back to the objective: SWBAT describe the importance of enzymes by examining their roles in the human body. ~Was the objective met? ~What did you learn today?
Homework
Finish the analysis questions from the
Enzyme Lab