False-colour transmission electron micrograph of a green chloroplast from a variegated leaf of the plant Coleus blumei. Chloroplasts are the sites of photosynthesis in plants & green algae. Chlorophyll pigments,stimulated by light,initiate a chemical reaction,which leads to the formation of sugar from carbon dioxide. Chloroplasts are usually lens-shaped & bound by two membranes; the inner one is folded into a series of stacks called grana (green,threadlike). Chlorophyll pigments are stored on the grana. The large pink region in the chloroplast is a starch grain,a product of photosynthesis. Magnification: x5000 at 6x4.5cm size | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Burgess, Dr. Jeremy |
Bildgröße: | 3543 px × 2702 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |