E. coli O157H7 What is the morphology and gram reaction of this pathogen (2) E. coli‚ including E. coli O157H7 is a gram-negative bacillus. What do (i) O157 and (ii) H7 attached to the name of this bacterium represent (2). The O157 is the O HYPERLINK http//www.emedicinehealth.com/script/main/art.asparticlekey5469 serotype antigen that identifies the E. coli strain‚ and the H7 represents the antigen type on the HYPERLINK http//www.emedicinehealth.com/script/main/art.asparticlekey2416 bacteriums
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Escherichia coli also known as E. Coli‚ is a type of bacteria which thrives in polluted water. Many people will come in contact with this type of bacteria in their lifetime. In fact‚ E. coli is normally found in the intestine of humans and animal where it plays a significant role in the digestive system. The bacteria can also be found in raw meat and uncooked vegetables as well as polluted water. Most of the strain of E. coli are harmless therefore they will not cause illness if consumed. “One of
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In the experiment involving varying pH levels‚ E. faecalis‚ S. epidermidis‚ L. lactis‚ and L. casei were subjected to different pH levels and then were allowed to incubate in order to determine the minimum‚ maximum‚ and optimum pH levels for growth of specific bacterial species. It was found that lower pH levels between 2 and 4 inhibited or promoted little to no growth for E. faecalis‚ S. epidermidis‚ and L. casei. It is evident that these bacteria were resistant to alkaline environments‚ however
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1) TITLE (2pt): Testing antimicrobial props in soaps 2) INTRODUCTION (6 pts): In this experiment we wanted to test how effective different types of soaps against E. Coli. For this experiment we were interested in looking at antimicrobial soaps vs. non-antibiotics soaps in their effectiveness to kill E. Coli. The protocol that we used was the Kirby Bauer technique. This technique was used to test the antimicrobial properties of each soaps. (“Kirby-Bauer” 2015). 3) METHODS (6 pts): We first started
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This article is about public and private swimming pools being contaminated with E. coli. Chlorine is not doing its job in sanitizing the human waste in the swimming pool. Human waste seems to refuse being sanitized. The Centers for Disease Control (CDC) concluded that the E. coli came from one major primary source; swimmers pooping in the swimming pool. Researchers say such contamination is due to swimmers not rinsing themselves off before going in the pool. Scientists say a person carries about
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their food intake is through meat and dairy products and it’s not a lie when people say the food industry is a bunch of shady people. Past generations have been able to eat raw beef without even considering consequences like e-coli‚ but at this point in the United States e coli is the least of our worries. It is time to stand up against the food industry and make a change for the better of our world‚ and our future generations. The United States is a country where food is being mass-produced. We
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METHODS In this experiment‚ plasmid lux and a control plasmid (pUC18) will be introduced into E. coli by transformation. There are four basic steps to the procedure; Preparation of competent cells (These steps should be performed by the instructor.) 1. Place a vial of CaCl2 solution and the tube of E. coli in the ice bath. 2. Using a sterile pipet‚ transfer 590µL CaCl2 solution to the tube containing 50µL of the bacteria. 3. Tap the vial with the tip of your index finger to mix the solution. 4. Incubate
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Main text. Questions. Page 3. 1. What does e.coli stand for? E.coli stands for Escherichia coli. 2. What are the symptoms associated with E.coli bacterial infection? The symptoms are diarrhea‚pain‚cramping‚nausea and vomiting. 3. give a detailed comparison of the levels of the e.coli bacteria over the five week period as given above. Page 4. 4. What could possible reasons
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Microbiology Lab ReportPractica #1BTC307LAmber AmelingmeierThursday‚ September 18‚ 2008OBJECTIVESIn this lab experiment two different types of bacteria‚ Escherichia coli and Staphylococcus aureus‚ were grown singly and mixed on four different types of agar in order to observe the varying morphologies within the colonies. Resulting data was analyzed to provide understanding of the use of differing culture media and conditions for bacterial growth. RESULTSFour different agar types were used in this
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General information: What is E.coli? Escherichia coli‚ or commonly referred to as E.coli is a foodborne pathogen that normally inhabits in the intestinal track of humans and animals. It is the most common and wide spread infecting organism and is in the family‚ Enterobacteriaceae. Enterobacteriaceae is a large family of Gram-negative bacteria‚ meaning the bacteria appear pinkish or red. How fast and how does it spread? The main way that E.coli can spread is through food and water supply. Common
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