1. Enzymes

2. Enzymes Enzymes are made of PROTEINS.
Catalyst------Enzymes act as catalysts. They speed up the rate of a chemical reaction but they are NOT changed themselves.

3. Enzymes
Enzymes end in “-ase”
Enzymes are named for what they work on.

4. Substrate Substrate ----What an enzyme works on. ENZYME SUBSTRATE
Maltase Maltose
Lipase Lipids
Protease Proteins
Lactase Lactose

5. Active Site
The place on the enzyme that binds to the substrate.

6. Enzyme-Substrate Complex
When the enzyme and substrate are combined (the reaction is about to take place)

7. Lock and Key Model Enzymes have a specific shape.
The shape of the enzyme perfectly fits together with the shape of its substrate.

8. The Big Picture

9. Factors That Affect Enzymes
pH A T

10. pH
Different enzymes work best at different pH.

11. The speed of the reaction of that enzyme.
Amount
Amount of enzymes present
Amount of substrates present
Determines
The speed of the reaction of that enzyme.

13. Temperature
Different enzymes work best at different temperatures.

14. Denature
Denature: When an enzyme’s shape is changed so it no longer works.

15. Denature It becomes denatured if: Temperature is too hot or cold
Too Acidic or Basic
Too much or little substrate