Hum 300 , History & Methods Of Science

Antibiotics2007After suffering a lot of devastating epidemic attacks and slew deaths humanity invented antibiotics and started applying them against known bacteriuml diseases . Using antibiotics for the last 6 decades , we atomic number 18 now facing the results of the process caused by polygenic changes and mutations in bacteria . This do-nothing be explained by i of the basic principles of evolution : natural selection , which suggests that the fittest and the strongest survive , and the weakest disappearBacteria argon one-celled organisms , which are really vulnerable to mutations . It is known that the most of the mutations affect the organisms . But certainly , there are many chances of positive outcomes of mutations as well . Mitosis of bacteria is a truly fast process , which brings to rapid growth of the populat ion . Having much(prenominal) huge number of bacteria , the chances of positive mutation are higher , therefore , more and more bacteria skunk 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 inquiring for new antibiotics , either modifying the known ones or looking for something before long differentAccording to the re search of the Harvard School of Public Healt! h , 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 , slide by that in the nearest future more and more species of bacteria will be able to resist old antibiotics . and 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, place it on our website: OrderEssay.net

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