Life Science 2 lecture 7

Life Science 2 lecture 7 - Life Science 2 (lecture 7) I....

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Life Science 2 (lecture 7) I. Early History of Photosynthesis II. The two parts of photosynthesis III. Detailed Photophosphorylation IV. Where does everything occur? V. Exam I Results -------------------------------------------------------------------- I. Early History of Photosynthesis Where does plant matter come from: 50 lbs Soil + 50 lbs Tree ---5 years later-------> 49 1/2 lbs soil + 215 lbs Tree! Q: How can you test whether the mass of a plant comes from its soil? Where else might it come from? A: Other early photosynthesis research: 1772 plant alone in Jar - Death Animal alone in Jar - Death Need something in the air! Plant + Animal in Jar - life x 2! Conclusion: Plants and Animals "restore" air for each other. Ingredients for Photosynthesis CO2 + H2O + Light ----> Sugar (CH2O) + O2 + H2O Full Rxn: 6 CO2 + 12 H2O + Light ---> C6H12O6 + 6 O2 + 6 H2O -------------------------------------------- II. The Two Stages of Photosynthesis 1. Light Reactions (note: no sugar produced!) o
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Life Science 2 lecture 7 - Life Science 2 (lecture 7) I....

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