1. Photosyntesis What is photosynthesis? The ability to use light to convert inorganic molecules into organic molecules. H 2 O + CO 2 ==== light ==  sugar + O 2 Sugar can then be used to make other required molecules, or it can be Broken down as a source of energy… O 2 is simply a biproduct of photo- Synthesis… almost all the O 2 in the earth’s atmosphere comes from phot Synthesis.

2. Photosyntesis Leaves and Chloroplasts are adaptations for photosynthesis.

3. Photosyntesis – light and dark reactions Photosynthesis has two phases: A light dependent reaction where the energy in light is converted into chemical energy of molecules such as ATP and NADPH. A dark reaction where the molecular energy carriers are used to build the sugar molecules.

4. Photosyntesis – Pigments The first step of photosynthesis involves using pigments to capture light. The range of visible light used for photosynthesis is from about 400 to 750 nanometer wavelengths of electromagnetic radiation… this range is referred to as PAR – Photosynthetically Active Radiation. Although chlorophyll is the primary pigment used by plants (it’s what makes plants green…), other pigments such as carotenoids and phycocyanin are also used… why do you think this is?

5. Photosyntesis – Effects of varying light levels P: photosynthesis P max : maximum photosynthesis P g : gross photosynthesis P n : net photosynthesis R : respiration I K : saturating irradiance

6. Respiration H 2 O + CO 2 ==== light ==  glucose (sugar) + O 2 Photosynthesis: Complete glucose metabolism through cellular respiration: sugar + O 2 ======  H 2 O + CO 2 + chemical and heat energy

7. Respiration – summary

8. Respiration – Glycolysis

9. Respiration – summary

10. Respiration – lactate and alcohol fermentation

11. Respiration NADH: Nicotinamide adenine dinucleotide FADH 2 : Flavin adenine dinucleotide

12. Respiration – electron transport chain

15. Respiration - summary

16. Respiration – other organics besides sugars?