Chloroplasts

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Chloroplasts are organelles found in plants and some protists that carry out photosynthesis. They contain the pigment chlorophyll which is responsible for the green colour of the chloroplasts. When a photon hits a chlorophyll molecule within a chloroplast, a pair of electrons is excited and this is the start of the process of photosynthesis, eventually resulting in the production of sugars. The energy captured from light is first stored as ATP and NADH before being used in photosynthesis.

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