10. Absorption Spectrums Absorption spectrums are graphs that plot a pigment’s light absorption vs. wavelength Absorption spectrum of chlorophyll **Remember: Green wavelengths are between ~ 475 and 600 nm
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12. Comparison of absorption and action spectra Absorption spectrum for chlorophyll Action spectrum for chlorophyll *Almost no absorption at green wavelengths *The photosynthetic rate is very low at green wavelengths
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21. 6. The water is split into hydrogen ions, oxygen and electrons 7. Electrons are donated to PS II (GER) 8. Oxygen and hydrogen ions are byproducts 9. Oxygen is released to the atmosphere 10. The production of oxygen in photosynthesis is done by photolysis and requires sunlight
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51. Rate of photosynthesis Carbon dioxide concentration The effect of carbon dioxide on photosynthesis *There is no photosynthesis when carbon dioxide is low *Carbon dioxide and photosynthesis are directly proportional *At high carbon dioxide concentrations photosynthesis plateaus
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53. Rate of photosynthesis Temperature The effect of temperature on photosynthesis *As temperature increases so does the rate of photosynthesis *After the optimum temperature is surpassed the rate quickly falls
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