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Biology  /  Bio 0273  ·  Atom · ~20 seconds

Chloroplasts

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A chloroplast is a double-membrane plant organelle, with its own DNA and ribosomes, that carries out photosynthesis using stacked thylakoids within a stroma.

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Chlorophyll in the thylakoid membranes captures light energy, while sugar synthesis happens in the surrounding stroma.

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Chloroplasts belong to plant cells and some protists only — animal cells never carry them.