1. Chemical Context of Life
AP Biology
Crosby High School

2. Elements
Earth, Air, Fire, Water
Compounds

3. Atomic Structure Subatomic particles 42He Isotopes Energy Levels
Carbon Dating
Tracers
PET scans
Energy Levels
Absorb and release energy

4. Strong Bonds Covalent Ionic O2 is double bonded
Nonpolor and Polar Covalent Bonds
O is nearly most EN
Ionic
Anions vs. Cations
Salts

5. Weak Bonds
Hydrogen Bonding
Van der Waals Interactions

6. Form Fits Function Substrate and active site
Aides formation of weak bonds
Morphine, Heroine, Opium, Endorphines

7. Chemical Rxn. Make and Break
6CO2 + 6H2O  C6H12O6 + 6O2
Chemical Equilibrium