sulfur definition biology

At high concentrations these acids harm the lungs, eyes, or other tissues. In the 1880s, while studying Beggiatoa (a bacterium living in a sulfur rich environment), Sergei Winogradsky found that it oxidized hydrogen sulfide (H2S) as an energy source, forming intracellular sulfur droplets. Definition noun A pharmaceutical sulfur used in treating skin diseases, bacterial infections, and fungal infections, made through sublimation Supplement Synonym(s): Learn more. Elements for which there are no data will always give a value of zero for the weight, no matter what you put in the weight box. xlv+455.

In the USA it is spelt sulfur.

In people, hydrogen sulphide in very small concentrations can be metabolized, but in higher concentrations it kills quickly by preventing respiration. The burning of coal and/or petroleum by industry and power plants generates sulfur dioxide (SO2) that reacts with atmospheric water and oxygen to produce sulfuric acid (H2SO4) and sulfurous acid (H2SO3). Before using our website, please read our Privacy Policy. The sulfur cycle was the first of the biogeochemical cycles to be discovered. Hydrogen sulfide is as toxic as hydrogen cyanide,[clarification needed] and kills by the same mechanism (inhibition of the respiratory enzyme cytochrome oxidase),[85] though hydrogen sulfide is less likely to cause surprise poisonings from small inhaled amounts because of its disagreeable odor. All rights reserved. Sigel, Astrid; Freisinger, Eva; Sigel, Roland K.O., eds. The practice has declined since reports of an allergy-like reaction of some persons to sulfites in foods. Any information here should not be considered absolutely correct, complete, and up-to-date.

Standard-formulation dusting sulfur is applied to crops with a sulfur duster or from a dusting plane.

In organic production, sulfur is the most important fungicide. Over time, soil bacteria can convert it to soluble derivatives, which can then be used by plants. Vol. Chapter of. Views expressed here do not necessarily reflect those of Biology Online, its staff, or its partners. It is an essential nutrient for plant growth, root nodule formation of legumes, and immunity and defense systems. In the USA it is spelt sulfur.

In plants and animals, the amino acids cysteine and methionine contain most of the sulfur, and the element is present in all polypeptides, proteins, and enzymes that contain these amino acids. [74], Sulfur can be used to create decorative inlays in wooden furniture. Learn about the different types of muscle tissues in this t..

These acids are components of acid rain, lowering the pH of soil and freshwater bodies, sometimes resulting in substantial damage to the environment and chemical weathering of statues and structures. Small amounts of sulfur dioxide gas addition (or equivalent potassium metabisulfite addition) to fermented wine to produce traces of sulfurous acid (produced when SO2 reacts with water) and its sulfite salts in the mixture, has been called "the most powerful tool in winemaking". Berlin/Boston: de Gruyter. A strong odor called "smell of sulfur" actually is given off by several sulfur compounds, such as, C. E. J. de Ronde, W. W. Chadwick Jr, R. G. Ditchburn, R. W. Embley, V. Tunnicliffe, E. T. Baker. S. L. Walker. Sulfur (in British English: sulphur) is a chemical element with the symbol S and atomic number 16. The nervous system is essentially a biological information highway. Chemistry of the Elements (2nd ed. Some bacteria and archaea use hydrogen sulfide in place of water as the electron donor in chemosynthesis, a process similar to photosynthesis that produces sugars and utilizes oxygen as the electron acceptor. In humans, methionine is an essential amino acid that must be ingested.

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