52.5 MB (6.7 MB compressed)
5077 x 3617 pixels
42.9 x 30.7 cm ⏐ 16.9 x 12.1 in (300dpi)
DR JEREMY BURGESS / SCIENCE PHOTO LIBRARY DR JEREMY BURGESS / SCIENCE PHOTO LIBRARY
False colour transmisson electron micrograph of a chloroplast in the leaf of a pea plant Pisum sativum. The chloroplast is the site of photosyn- thesis; a process by which plants obtain carbohyd- rates from carbon dioxide, using the energy from sunlight.The contents of the chloroplast are bound together by a double membrane.Internally, chlorop- lasts consists of stacks of flattened membranes called grana (black thread-like) suspended in a matrix of hydrophilic proteins. The grana contain the chlorophyll pigments & are the sites of light reactions during photosynthesis. The large white oval is a starch body, a photosynthesis product. Mag: X70,000 at 10x8 inch, X10,000 at 35mm size. Colorvir: Yellow/ lime green.
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