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17 November 2010 21:15

Mic-UK [site A]: diatoms

by fotopol
What are diatoms? Diatoms are delicate unicellular organisms that have a yellow-brown chloroplast that enables them to photosynthesize. Their cell walls are made of silica almost like a glass house. The construction of the cell wall, called the frustule, consists of two valves that fit into each other like a little pill box.

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last mark : 17/11/2010 21:25