1. Enzyme Review Enzyme Review

2. 2 What Are Enzymes? Enzymes are Proteins that speed up chemical reactions. They act as Catalysts to break and form bonds when molecules interact End in -ase

3. 3 Enzyme Structure Enzyme Structure The substance an enzyme acts on is the substrate The active site is the region on an enzyme where the substrate binds. Enzyme

4. 4 Lock and Key Model Enzymes are specific for what they will catalyze Substrate and active site fit together like a lock and key

6. Example: Sucrase (enzyme) sucrose (substrate) Sucrase

7. More Examples: What do you think the following enzymes break down and build back up: Lipase Protease DNA helicase Lactase Maltase

8. 8 What can Denature an Enzyme? high temps may denature (unfold) the enzyme. pH (most like 6 - 8 pH near neutral) Ionic concentration (salt ions)