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Hydrogen sulfide is often produced from the microbial breakdown of organic matter in the absence of oxygen, such as in swamps and sewers; this process is commonly known as anaerobic digestion, which is done by sulfate-reducing microorganisms.
In 2008, hypothermia induced by hydrogen sulfide for 48 hours was shown to reduce the extent of brain damage caused by experimental stroke in rats. [17] As mentioned above, hydrogen sulfide binds to cytochrome oxidase and thereby prevents oxygen from binding, which leads to the dramatic slowdown of metabolism. Animals and humans naturally ...
Instead of releasing oxygen gas while fixing carbon dioxide as in photosynthesis, hydrogen sulfide chemosynthesis produces solid globules of sulfur in the process. Mechanism of Action In deep sea environments, different organisms have been observed to have the ability to oxidize reduced compounds such as hydrogen sulfide. [ 7 ]
The oxidation of hydrogen sulfide has been considered one of the most important processes in the environment, given that the oceans have had very low oxygen and high sulfidic conditions over most of the Earth's history. The modern analog ecosystems are deep marine basins, for instance in the Black Sea, near the Cariaco trench and the Santa ...
Hydrogen fluoride has been considered as a possible solvent for life by scientists such as Peter Sneath. [citation needed] Hydrogen sulfide biochemistry Non-water solvents Hydrogen sulfide-based life Hydrogen sulfide is a chemical analog of water, but is less polar and a weaker inorganic solvent. [citation needed] Methane biochemistry (Azotosome)
Cable bacteria likely engage in oxygen chemotaxis, as they are observed to move when in anoxic or hypoxic environments, and cease gliding when contact with oxygen is made. [18] Although motility is important for other microorganisms, once cable bacteria are located in a place that connects oxygen to sulfide, they no longer need to move. [18]
Venenivibrio stagnispumantis gains energy by oxidizing hydrogen gas.. In biochemistry, chemosynthesis is the biological conversion of one or more carbon-containing molecules (usually carbon dioxide or methane) and nutrients into organic matter using the oxidation of inorganic compounds (e.g., hydrogen gas, hydrogen sulfide) or ferrous ions as a source of energy, rather than sunlight, as in ...
Sulfur-reducing bacteria are microorganisms able to reduce elemental sulfur (S 0) to hydrogen sulfide (H 2 S). [1] These microbes use inorganic sulfur compounds as electron acceptors to sustain several activities such as respiration, conserving energy and growth, in absence of oxygen. [2]
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