Pseudanabaena blue-green alga

Pseudanabaena blue-green alga

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Caption: Blue-green algae. Transmission electron micrograph of a single cell of the blue-green alga Pseudanabaena sp. Blue-green algae (cyanobacteria) are primitive algae; in structure they are related to bacteria. They are prokaryotes containing no membrane-bound nucleus; instead, as in bacteria, nuclear material is dispersed throughout the cell. Photosynthetic lamellae (layered structures, outer part of cell) are the primitive chloroplasts. Pseudanabaena occurs as motile filaments of cells, called trichomes. Magnification: x100,000 at 8x10 inch size.

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Keywords: alga, algae, algal, blue-green, blue-green algae, botany, cyanobacter, cyanobacteria, filamentous, filamentous algae, nature, plant, prokaryote cell, pseudanabaena sp., trichome

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