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Cyanobacteria: Blue-green bacteria; unicellular or filamentous chains of cells that carry out photosynthesis.

Cobalt (Co): Atomic number: 27, Atomic mass: 58.9332 g.mol -1, Electronegativity: 1.8, Density: 8.9 g.cm-3 at 20°C, Melting point: 1495 °C, Boiling point: 2927 °C, Vanderwaals radius: 0.125 nm, Ionic rad . . . View Full Definition

Phycoerythrin: An accessory pigment found in cyanobacteria and the chloroplasts of red algae.

Phycocyanin: An accessory pigment found in cyanobacteria and the chloroplasts of red algae.

Phototrophs: Organisms that use sunlight to synthesize organic nutrients as their energy source; e.g., cyanobacteria, algae, and plants.

Monera: Prokaryotic kingdom that includes (in the most widely accepted classification system) archaebacteria, eubacteria, and cyanobacteria. Members of this kingdom were among the first forms of lif . . . View Full Definition