Photosynthetic Pigments
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6 Terms
What are the 2 types of pigments?
Chlorophyll & Carotenoids
Help form the light harvesting system
Carotenoids surround primary pigment & absorbs similar & diff. wavelengths of light to chlorophyll
What colours do chlorophyll absorb and reflect?
Chlorophyll absorbs mainly red & blue light
Reflects green
Why is it important to have different photosynthetic pigments?
Light is absorbed by diff. complexes of the pigments
Expands the range of wavelengths of light that can be absorbed for photosynthesis
Thylakoid membrane system provides large no. of pigment molecules in an arrangement that ensures as much light as necessary is absorbed
Photosystems
Light harvesting clusters containing pigment molecules arranged in funnel-like structures (each pigment molecules passes energy down to next until reaches chlorophyll (primary pigment) reaction centre
Embedded in thylakoid membranes of chloroplasts (as well as other proteins)
Role of light harvesting system
To absorb light energy of different wavelengths & transfer this quickly & efficiently to the reaction centre (chlorophyll)
What is the light harvesting system & reaction centre known as together?
Photosystem
Note 
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