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How is chlorophyll able to trap light energy from the sun?

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The trapping of light energy is the key to photosynthesis. The first event is the absorption of light by a photoreceptor molecule. The principal photoreceptor in the chloroplasts of most green plants is chlorophyll a, a substituted tetrapyrrole (Figure 19.5). read more

The energy from the light excites an electron from its ground energy level to an excited energy level (Figure 19.7). This high-energy electron can have several fates. read more

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