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Structures found on meteorite fragment Allan Hills 84001. Nanobacterium (/ ˌ n æ n oʊ b æ k ˈ t ɪər i əm / NAN-oh-bak-TEER-ee-əm, pl. nanobacteria / ˌ n æ n oʊ b æ k ˈ t ɪər i ə / NAN-oh-bak-TEER-ee-ə) is the unit or member name of a former proposed class of living organisms, specifically cell-walled microorganisms, now discredited, with a size much smaller than the generally ...
These bacteria were found in groundwater samples and analyzed with 2-D and 3-D cryogenic transmission electron microscopy. These ultra-small bacteria, about 1 million base pairs long, [ 6 ] display dense spirals of DNA, few ribosomes, hair-like fibrous appendages, and minimized metabolic systems. [ 6 ]
Chlamydomonas (/ ˌ k l æ m ɪ ˈ d ɒ m ə n ə s,-d ə ˈ m oʊ-/ KLAM-ih-DOM-ə-nəs, -də-MOH-) is a genus of green algae consisting of about 150 species [2] of unicellular flagellates, found in stagnant water and on damp soil, in freshwater, seawater, and even in snow as "snow algae". [3]
These aerobic microorganisms, found deep in organically poor sediments, have been in quasi-suspended animation for maybe 100 million years. In 2020 researchers reported they had found what could be the longest-living life forms ever: aerobic microorganisms which had been in quasi-suspended animation for up to 101.5 million
Bioluminescent bacteria are light-producing bacteria that are predominantly present in sea water, marine sediments, the surface of decomposing fish and in the gut of marine animals. While not as common, bacterial bioluminescence is also found in terrestrial and freshwater bacteria. [125]
Species have been found in both stagnant and free flowing water bodies, although morphology of species between the two water types slightly differs. [3] Physio-chemical studies of the habitats have shown that Tetraspora species tolerate wide pH ranges: (4.5-9.63) but are most commonly found in water bodies with a pH between 6–7. [3]
Evidence of methanogenesis can be found alongside of AOM in sediments. [19] Thermophilic methanogens are found to grow in Hydrothermal vent plumes at temperatures between 55 °C to 80 °C. [21] However, autotropic methanogenesis performed by many thermophilic species require H 2 as an electron donor so microbial growth is limited by H 2 ...
Trichodesmium is found primarily in water between 20 and 34 °C and is frequently encountered in tropical and sub-tropical oceans in western boundary currents. [13] Its presence is more pronounced in nitrogen poor water and can easily be seen when blooms form, trapping large Trichodesmium colonies at the surface. [14]