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The chlorophyll a molecule and the primary electron acceptor in a photosystem; they trigger the light reactions of photosynthesis. The chlorophyll donates an electron - excited by light energy - to the primary electron acceptor - which passes an elec

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1. The chlorophyll a molecule and the primary electron acceptor in a photosystem; they trigger the light reactions of photosynthesis. The chlorophyll donates an electron - excited by light energy - to the primary electron acceptor - which passes an elec





 
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