Photosystems
Photosynthetic pigments are arranged in light-harvesting clusters or photosystems in the thylakoid membrane. Several hundred accessory pigments capture light energy and channel the energy to a chlorophyll a molecule at the reaction centre of the photosystem.

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More in Energy for Biological Processes
- ATP
- Chloroplasts
- Photosynthetic pigments
- Cyclic Photophosphorylation
- Non-cyclic Photophosphorylation
- Chemiosmosis
- Calvin Cycle
All 8 lessons in Energy for Biological Processes · All AQA A-level Biology topics