TEM of stacks of grana in chloroplast
Numéro d’image : 11523657
| False-colour transmission electron micrograph of stacks of grana in a chloroplast from a leaf of maize,Zea mays. The grana in chloroplasts are the sites of photosynthesis in higher plants. They bear the light-receptive green pigment chlorophyll which contains the enzymes that convert carbon dioxide & water into useful chemical energy in the presence of sunlight. Higher plants usually have 20-50 chloroplasts per cell,or about 500,000 per square millimetre of leaf surface. The black particles in this micrograph are fat droplets which act as a reserve of raw materials for production of new cell membranes. Magnification: x8700 at 35mm size. Reference: MICROCOSMOS,figure 6.13,page 116 | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / Miller, Dr. Kenneth R. |
| Taille de l’image : | 3543 px × 2766 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : | - |
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