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Credit: Aaron Nathans In a study with implications for chronic infections, Princeton researchers have described multiple pathways that some bacteria use to tolerate normally lethal antibiotic treatments. The findings overturn common assumptions about antibiotics' limited effectiveness against certain bacteria and could lead to better treatments. Research into some bacteria that survive antibiotics , called persisters, has focused on the genes that allow some bacteria to tolerate antibiotic treatments. In their recent study, the Princeton researchers explored how the number of DNA copies in a cell affects whether a cell persists despite exposure to DNA-damaging antibiotics called fluoroquinolones. The study confirmed the researchers' expectation that bacteria with backup chromosomal copies of DNA proved to be persisters at a much greater rate than cells with just one copy. Yet the results, which published March 11 in Current Biology, came with a significant twist. To a surprising degree, cells with just one DNA copy still managed to persist against fluoroquinolone treatment as well. The experiments revealed a second and separate pathway to persistence in cells with a lone DNA copy. By bringing these two persistence pathways to light, the findings point the way to new strategies that could more effectively kill off the hardy microbes. Unlike fully antibiotic resistant "superbugs," persisters do not possess mutated genes; in fact, persisters are genetically identical to their normal, antibiotic-prone bacterial brethren.Something and: Importance Of Bacteria In Everyday Life
| ROOF CONTRACTORS | 1 day ago · In biology to count the number of bacteria iii In physics to count the number from SST at Kenyatta UniversityMissing: Everyday Life. 2 days ago · Bacteria are ecologically very important. They show many adaptations. So they are present everywhere. They decompose organic matter and play an important role in the completion of cycles of nitrogen, phosphorus, sulfur and carbon. Economic Importance. Bacteria show following beneficial and harmful effects. Kombucha (also tea mushroom, tea fungus, or Manchurian mushroom when referring to the culture; Latin name Medusomyces gisevii) is a fermented, lightly effervescent, sweetened black or green tea drink commonly consumed for its purported health benefits. Sometimes the beverage is called kombucha tea to distinguish it from the culture of bacteria and yeast. Related products: Water kefir, Kefir, Kvass, Beer, Iced tea. |
| STRATEGIC PLANNING AND CHANGE MANAGEMENT: THE WATSONVILLE | 2 hours ago · Foraging intensity of large herbivores may exert an indirect top-down ecological force on soil microbial communities via changes in plant litter inputs. We investigated the responses of the soil microbial community to elk (Cervus elaphus) winter range occupancy across a long-term foraging exclusion experiment in the sagebrush steppe of the North American Rocky Mountains, combining Missing: Everyday Life. Apr 13, · It is important to note here that most of these bacterial strains already exist inside the human gut as a part of its natural microbiota so supplementing them is not likely to disturb the body in. 1 day ago · In biology to count the number of bacteria iii In physics to count the number from SST at Kenyatta UniversityMissing: Everyday Life. |
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They play very important role in the life of human beings. Their importance is given below: Ecological Importance Bacteria are ecologically very important. They show many adaptations.
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So they are present everywhere. They decompose organic matter and play an important role in the completion of cycles of nitrogen, phosphorus, sulfur and carbon. Economic Importance Bacteria show following beneficial and harmful effects: Bacteria are used in number of industries like food, drugs production of antibiotics and vaccines and biotechnology. They are responsible for the spoilage of food and vegetables.
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Many plant pathogens adversely affect the agriculture the agriculture industry. Bacteria are common pathogen of humans. There are species of bacteria which cause disease in man.
Many bacteria normally live in the bodies of man and other animals and perform important functions. Medical Importance Importamce are very common pathogens of humans. Approximately, species are known to cause diseases in humans. Many bacteria normally inhabit the bodies of man and other animals. Decaying OOf dead bodies: Bacteria decompose the dead remains of plants, animals and human beings into simpler compounds. In this way they help to clean the world.
Bacteria in Industries: Bacteria are used in dairy industry they change the milk into curd. They are used in the formation of butter and cheese from milk. From certain bacteria antibiotics are obtained, for example Terramycin, Importance Of Bacteria In Everyday Life, Neomycin etc. Bacteria are used in the preparation of alcohol and vinegar. Bacteria are also used in leather industry. Digestion: Certain bacteria are present in the intestine of man arid help in the digestion of cellulose. FertiIity of soil: Bacteria increase the fertility of soil by adding organic substances due to the decompositions of dead bodies. Nitrogen Fixation: Bacteria also take part in nitrogen fixation i. These compounds are used by the plants. Spoilage of Food: Bacteria spoil our food stuff in large amount by the chemical process.
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It is a great loss. Diseases in Man: Bacteria are responsible to cause various diseases in man and other animals, such as Tuberculosis T. Diseases in Plants: Bacteria also cause disease in various plants, such as Citrus Canker, Fire blight of apple, Ring disease of potato, wilt of solanaceae plants etc.]
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