Effects of Wavelength and Light Intensity on Photosynthetic Activity

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Written by:

Marcus O


Date added:

October 12, 2010







No of pages / words:

8 / 1972


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6501 times


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Both a control and an experimental cuvette were exposed to a range of 450 to 750nm of light and varying intensities to test for reaction rates. These effects on rate were obtained by measuring the absorbance of DCPIP on a spectrophotometer after 16 minutes. We hypothesize that the least effective wavelength will be that which is reflected back at us in broad day light, this being green light of about 545 nm in wavelength...
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In regards to intensity, we hypothesize that the most intense source of light will result in the greatest photosynthetic activity based on the resource availability principle. The results clearly demonstrate the ideal conditions in each set of given variables for an optimum reaction rate and also reflect upon the chemical structure of chlorophyll itself...
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