Absorption of Light by Chlorophyll. Higher Biology. Light absorption by chlorophyll. Measuring light absorption. A spectrometer is used to measure the amount of absorption at each wavelength An action spectrum shows the rate of photosynthesis at different light intensities.
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Chlorophyll A and B absorb light mostly in the red and blue regions of the spectrum
-very wide absorption spectrum
-absorbs light in parts of the spectrum where chlorophyll is less efficient
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