Chloroplasts
Chloroplasts are organelles found in plant cells and some other organisms. As well as controling photosynthesis, they are involved in a plant's immune response. During photosynthesis, chloroplasts capture the sun's light energy, and store it in the energy storage molecules ATP and NADPH while freeing oxygen from water. They then use the ATP and NADPH to make organic molecules from carbon dioxide in a process known as the Calvin cycle. The word chloroplast is origianted from the Greek words chloros, which means green, and plastes, which means "the one who forms".