Picture of Plant Cell Chloroplast, where photosynthesis occurs; this image is 500 pixels across the original is 2,200 pixels across.
The image above shows a close up view of a chloroplast inside a plant cell. Chloroplasts have a complex internal membrane system and contain chlorophyll. Chloroplasts are where photosynthesis occurs. Photosynthesis is the manufacture of organic molecules from inorganic ones and is powered by light energy from the sun.