Chloroplasts are organelles found in plant cells and eukaryotic algae that conductphotosynthesis. Chloroplasts absorb light and use it in conjunction with water and carbon dioxide to produce sugars, the raw material for energy and biomass production in all green plants and the animals that depend on them, directly or indirectly, for food. 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 which means green andplast which means form or entity. Chloroplasts are members of a class of organelles known as plastids.
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