Antibiotics research 1. Define the term antibiotics Antibiotics are a drug used to treat infections caused by bacteria and other microorganisms. Originally‚ an antibiotic was a substance produced by one microorganism that selectively inhibits the growth of another. Synthetic antibiotics‚ usually chemically related to natural antibiotics‚ have since been produced that accomplish comparable tasks 2. a) who was the first scientist to discover antibiotics Alexander Fleming (1928) b) Briefly
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understand the interaction between bacteria and antibiotics better. Such great understanding would then allow for manipulation of the drug usage‚ thereby strengthening our understanding of how to optimise antibiotic performance. Over the past decade‚ there have been numerous occasions where researchers have successfully identify possible pharmacodynamic outcome predictors‚ and assign quantitative values that would enable prediction of success/failure of antibiotic regimens. Furthermore‚ after reading this
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commonly used antibiotics is constantly increasing. Bacteria particularly dangerous for human life are methicillin-resistant Staphylococcus aureus‚ vancomycin-resistant Enterococcus faecium and fluoroquinolone-resistant Pseudomonas aeruginosa. Hence‚ there is an incessant need for developing compounds with new modes of action and seeking alternate drug targets. In this review‚ the authors discuss the current situation of antibacterial medicines and present data on new antibiotic targets. Moreover
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MBK – Lab Report Name: ____________________ Section: ___________________ Antibiotic Sensitivity The Kirby-Bauer Test Interpret your results as described below. INTERPRETATION: · Place the metric ruler across the zone of inhibition‚ at the widest diameter‚ and measure from one edge of the zone to the other edge. HOLDING THE DISH UP TO THE LIGHT MIGHT HELP. · The disc diameter will actually be part of that number. · If there is NO zone at all
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Evolution of Antibiotic Resistance Maricia Overly Professor Ellen Doyle South University Online July 30‚ 2011 Abstract “Super Bugs” (Clemmitt‚ 2007) are beginning to take control of our health. Antibiotic resistance has enabled germs that once caused very little harm the ability to leave us in dire straights. The worst part of these “Super Bugs” (Clemmitt‚ 2007) is that people can be walking around with them infecting others without knowing it. Evolution of bugs due to the overuse of antibiotics
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Biology Research Task- Lucy Kerslake What causes antibiotic resistance? Antibiotic resistance occurs when an antibiotic is no longer effective against a particular bacteria‚ making that organism resistant to the effects of the antibiotic. Bacteria become resistant due to selective pressure. Those organisms which resist the antibiotic‚ and do not die from it ’s effects have a greater chance of survival within the host‚ therefore allowing them to reproduce and spread it ’s resistance to other
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Introduction I. Antibiotics are among the most frequently used medications in the world today. A. They can cure anything from your minor discomforts to a life-threatening disease. B. However‚ if misused‚ antibiotics can cause many problems. II. Antibiotics are so overused‚ that the human body is becoming resistant to its cures. III. This morning I will show you that misusing antibiotics can be done without a person even realizing that they are doing it. A. First‚ antibiotics are used to feed
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Selection – Antibiotic Resistant Bacteria Read pg 112 -113 & 275 – 277 of you text book. Use this information plus information from secondary sources to answer the following questions so you will have a case study on antibiotic resistant bacteria. In this case study you will need to show how an environmental change can lead to a change in a species. Note: this will also cover content in the Search for Better Health topic. 1. Outline the purpose of anti-biotics Antibiotics are used for
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The Rise of Antibiotic-Resistant Infections by_ Ricki Lewis‚ Ph.D._ When penicillin became widely available during the second world war‚ it was a medical miracle‚ rapidly vanquishing the biggest wartime killer--infected wounds. Discovered initially by a French medical student‚ Ernest Duchesne‚ in 1896‚ and then rediscovered by Scottish physician Alexander Fleming in 1928‚ the product of the soil mold Penicillium crippled many types of disease-causing bacteria. But just four years after drug
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Antibiotic Sensitivity lab A. Define the term selectively toxic. Why is it an important feature of antimicrobial agents? Selective toxicity is the ability of a chemical or drug to kill a microorganism without harming its host. Selective toxicity is important to microbial agents because it enables these agents to inhibit or kill a microorganism by interacting with microbial functions or structures different from those of the host thereby showing little or no effect to the host. B. What
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