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Biology Unit 4
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Topic 5: On the wild side
2. Describe the structure of chloroplasts in
relation to their role in photosynthesis.




Chloroplast
Chloroplasts are large organelles, usually in a biconvex shape, and about 4-10 µm long and 2-3µ
wide.

Within plants most chloroplasts are found in the…

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Biology Unit 4
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Thylakoid membrane Light dependent reactions Contains chlorophyll, other
a system of interconnected accessory pigments, electron
flattened fluid-filled sacs carriers
Thylakoid Space Photolysis of water Photolysis enzyme(s)
fluid within the thylakoid
membrane
Granum Site for light-dependent Large surface area to absorb
a stack of thylakoids joined…

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