Hum 300 , History & Methods Of Science

Antibiotics2007After suffering a lot of devastating epidemic attacks and passel deaths humanity invented antibiotics and started applying them against known bacteriuml diseases . Using antibiotics for the last 6 decades , we are now facing the results of the process caused by genic changes and mutations in bacteria . This stub be explained by one of the basic principles of evolution : natural selection , which suggests that the fittest and the strongest survive , and the weakest disappearBacteria are one-celled organisms , which are real vulnerable to mutations . It is known that the about of the mutations affect the organisms . But certainly , there are more or less chances of positive outcomes of mutations as well . Mitosis of bacteria is a very fast process , which brings to rapid growth of the population . Having such(prenominal) huge number of bacteria , the chances of positive mutation are higher , therefore , more and more bacteria can become resistant to antibiotics treatmentNowadays , different types of pathogen bacteria can already survive the existing antibiotics , and using an excessive amount of antibiotics we dramatically fastened the process of natural selection in bacteria evolution . This situation threatens the effectiveness of traditional treatment methods to bacterial diseases .

That is why world scientists are facing the necessity of trenchant for new antibiotics , either modifying the known ones or looking for something dead differentAccording to the research of the Harvard School of Public Health , in 2005 .more than 40 of Streptococcus pneumoniae strains in the United States could resist both penicillin and erythromycin (Powledge , 2004 The other researches , based on mathematical modeling , establish that in the nearest future more and more species of bacteria will be able to resist old antibiotics . so , if no new antibiotics are available , we ll become etcBibliographyPowledge , T . M (2004 , February 17 . New Antibiotics - Resistance Is Futile . PLoS Biol 2 (2 : e53PAGEPAGE 2 AntibioticsPagePAGE...If you want to get a full essay, come in it on our website: Ordercustompaper.com

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