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Cyanobacteria (/ s aɪ ˌ æ n oʊ b æ k ˈ t ɪər i. ə /), also called Cyanobacteriota or Cyanophyta, are a phylum of autotrophic gram-negative bacteria [4] that can obtain biological energy via oxygenic photosynthesis. The name "cyanobacteria" (from Ancient Greek κύανος (kúanos) 'blue') refers to their bluish green color, [5] [6 ...
Cyanobacteria is the only prokaryotic group that performs oxygenic photosynthesis. Anoxygenic photosynthetic bacteria use PSI- and PSII-like photosystems, which are pigment protein complexes for capturing light. [5] Both of these photosystems use bacteriochlorophyll. There are multiple hypotheses for how oxygenic photosynthesis evolved.
Cyanobacteria have strict light requirements. Too little light can result in insufficient energy production, and in some species may cause the cells to resort to heterotrophic respiration. [4] Too much light can inhibit the cells, decrease photosynthesis efficiency and cause damage by bleaching.
Cyanobacteria are a phylum of bacteria that obtain their energy through the process of photosynthesis. [1] [2] Although cyanobacteria metabolize photoautotrophically like eukaryotic plants, they have prokaryotic cell structure. Cyanophages can be found in both freshwater and marine environments. [3]
What is blue-green algae? According to the Walworth County DHHS, "Blue-green algae are photosynthetic bacteria known as 'cyanobacteria,' which can cause illness and death in humans and animals.
Oscillatoria brevis is a mesophile but can bear a temperature of -16°C, [6] and can perform photosynthesis at a temperature of 70°C. [7] It is a photoautotroph, containing Chlorophyll a and c-phycocyanin, but can perform anoxygenic photosynthesis by reducing sulfur. [8] It is able to fix nitrogen, and can be cultured from soils.
Prochlorococcus is a genus of very small (0.6 μm) marine cyanobacteria with an unusual pigmentation (chlorophyll a2 and b2).These bacteria belong to the photosynthetic picoplankton and are probably the most abundant photosynthetic organism on Earth.
Cyanobacteria turn energy from the sun into chemical energy through oxygenic photosynthesis. Their light-harvesting complex that captures the photons usually includes the pigments chlorophyll a and phycocyanin. A cyanobacterium's typical blue-green color is a result of the combination of these two pigments.