Chloroplasts are specialized organelles found in all higher plant cells.
These organelles contain the plant cell's chlorophyll, hence provide the green color.
They have a double outer membrane.
Within the stroma are other membrane structures - the thylakoids and grana (singular = granum) where photosynthesis takes place.
Chloroplasts capture light energy to conserve free energy in the form of ATP and reduce NADP to NADPH through a complex set of processes called photosynthesis
The word chloroplast is derived from the Greek words chloros means green, and plastis means "the one who forms".
Chloroplasts are members of a class of organelles known as plastids.
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