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Sulfur reduction occurs in plants, fungi, and many bacteria. [10] Sulfate can serve as an electron acceptor in anaerobic respiration and can also be reduced for the formation of organic compounds. Sulfate-reducing bacteria reduce sulfate and other oxidized sulfur compounds, such as sulfite, thiosulfate, and elemental sulfur, to sulfide.
Miracinonyx (colloquially known as the "American cheetah") is an extinct genus of felids belonging to the subfamily Felinae that was endemic to North America from the Pleistocene epoch (about 2.5 million to 16,000 years ago) and morphologically similar to the modern cheetah (Acinonyx jubatus), although its apparent similar ecological niches have been considered questionable due to anatomical ...
The important sulfur cycle is a biogeochemical cycle in which the sulfur moves between rocks, waterways and living systems. It is important in geology as it affects many minerals and in life because sulfur is an essential element (), being a constituent of many proteins and cofactors, and sulfur compounds can be used as oxidants or reductants in microbial respiration. [1]
Flowers of Sulfur can be used as a humid sulfur vapor test for creep corrosion. [12] Creep corrosion is the corrosion of copper or silver caused by sulfur pollution and causes failure in electronic products. Sulfur pollution includes elemental sulfur, sulfur dioxide, and hydrogen sulfide, which can oxidize metals. [13]
Green sulfur bacteria exhibit activity from a Type-1 secretion system and a ferredoxin-NADP+ oxidoreductase to generate reduced iron, a trait that evolved to support nitrogen fixation. [34] Like purple sulfur bacteria, they can regulate the activity of nitrogenase post-translationally in response to ammonia concentrations.
These waterlogged environments may facilitate symbiotic relationships between heliobacteria and rice plants as fixed nitrogen—from the former—is exchanged for carbon-rich root exudates. Observation studies have characterized photoheterotrophs (e.g., Green non-sulfur bacteria such as Chloroflexi and AAPs) within photosynthetic mats at ...
YouTube earlier this year wound down most of its originals division, in a significant pullback on its investment in scripted and unscripted programming. But it’s not totally out of the game ...
Sulfur isotope biogeochemistry is the study of the distribution of sulfur isotopes in biological and geological materials. In addition to its common isotope, 32 S, sulfur has three rare stable isotopes: 34 S, 36 S, and 33 S.