1. What do all living things have in common?
Agenda for Wednesday Feb 17th
Enzyme Notes

2. All living things have carbon
Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorous, Sulfur (CHNOPS)
make up 96% of the body weight of organisms

3. Energy of Reactions
Minimum amount of energy needed for chemical reaction = activation energy

4. Types of Reactions Anabolic reactions
Energy is required (Uses heat/energy)
endothermic
Creates larger molecules

5. Catabolic reactions
break down molecules
Energy/heat is released
exothermic

6. What are these reactions?1 2

7. Catalysts lowers the activation energy and speeds up a reaction
Enzymes are biological catalysts

8. Enzymes as catalysts Speed up reactions/Lower activation energy
Made up of PROTEINS
Named for what they do
lactase - breaks down lactose (milk sugars)
Amylase - breaks down starch in food in mouth
Protease - breaks down protein

9. Reaction before and after enzyme

11. Enzymes Reactants that bind to the enzyme are called substrates
Specific location where a substrate binds on an enzyme is called active site

12. Induced Fit Theory/Key and Lock Model
Enzymes are SPECIFIC
Will only function correctly if the shape of the substrate matches the active site

14. What do enzymes do?
Agenda for Friday Feb 19th
Catalase Lab

15. 4 Conditions that affect enzymes
Substrate Concentration
Enzyme Concentration pH
Temp

16. Catalase Lab Catalase – enzyme found in almost all living things
Breaks down hydrogen peroxide (dangerous by product)
2 H2O2 → 2 H2O + O2
High concentration in liver in humans
Stored in cell organelles called Peroxisomes

17. https://paul-andersen.squarespace.com/048-enyzmes