I. Light

1. Properties of Light
   1. electromagnetic spectrum
   2. wavelength vs. Energy
2. Pigments
   1. light perception-absorption
   2. receptors
   3. absorption spectrum of chlorophyll

II. Photosynthesis

1. Process- organic compounds from CO2 and H2O
2. Reaction
3. Stages of Photosynthesis
   1. Light Reaction-light dependent a .light energy used to make high energy compounds, ATP and NADPH
   2. Dark Reaction-light independent
      1. energy from ATP/NADPH used to convert CO2 to sugar
      2. enzymatic in stroma of chloroplast
   3. Key points (long list)

III. Respiration

1. Energy
   1. Laws of thermodynamics
      1. you cant get something for nothing
      2. you can’t break even
2. Cell Respiration
   1. The reverse of photosynthesis
   2. Sugar burned to produce ATP
   3. Use ATP to do work in cells
3. Energy transformation is linear
   1. Food chains
      1. producers, consumers, decomposers

IV. Cycling of matter

1. Carbon cycle
2. Nitrogen cycle