Amphiprora diatom, SEM

Amphiprora diatom, SEM

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Credit: STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY

Caption: Amphiprora diatom. Coloured scanning electron micrograph (SEM) of a single diatom of Amphiprora. Diatoms may be extremely abundant in both freshwater and marine ecosystems; it is estimated that 20% to 25% of all organic carbon fixation on the planet is carried out by diatoms. This is possible because they contain chlorophyll. Diatoms are a major food resource for marine and freshwater microorganisms and animal larvae, and are a major source of atmospheric oxygen. A unique feature of diatom cells is that they are enclosed within a cell wall made of silica (hydrated silicon dioxide) called a frustule. Magnification: x1000 when printed at 10 centimetres wide.

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Keywords: 3 dimensional, 3d, alga, algae, algal, amphiprora, aquatic, bacillariophyceae, bacillariophyta, biological, biology, botany, centric, circular, colorized, coloured electron micrograph, diatom, diatomaceous, diatomophyceae, electron micrograph, enhanced, eukaryotic, flora, frustule, magnification, magnified, microbiology, micrograph, mineralized, no one, no-one, nobody, phytoplankton, plankton, planktonic, scanning electron micrograph, sem, silica, single, sulcata, three dimensional, unicellular

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