1. ENZYMES
REVIEW PPT

2. What is a biological catalyst?
Enzymes

3. What two things does a catalyst do?
1) a substance that speeds up a chemical rxn
2) lowers activation energy [meaning lowers heat]

4. What is a substance that enters into a chemical reaction?
Reactants
What is a substance that is produced by a chemical reaction?
Products

5. What is the energy needed to start a chemical reaction?
Activation energy

6. Graph of enzyme reaction with and without activation energy.

7. What goes into an enzyme-catalyzed reaction?
Substrate

8. Where does the substrate join to the enzyme?
Active site

9. What is a substance that slows or stops an enzyme reaction?
Inhibitor

10. What happens if too much heat is added to proteins?
Denaturation [ie. the protein unravels or unfolds]

11. What else can cause denaturation of enzymes?
Change of pH or chemicals.