source and to isolate Tn10 mutagenized colonies of Salmonella typhimurium which were induced auxotrophs and identify independent mutations. Results Mutants observed in Escherichia coli: Control 10-5 Dilution: 0/440 Control 10-6 Dilution: 0/310 Mutagenized 10-5 Dilution: 9/339 Mutagenized 10-6 Dilution: 23/ 403 A hypothesized E.coli mutant colony (opaque and white colony) from the EMS mutagenized plate was streaked on a new MacConkey’s
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Fluorescence Spectra Name: Holly Experimental Section: Include all details on preparation of standard solutions. Also include the vitamin tablet brand name; the listed mass of vitamin B2 per tablet; procedure used for extraction of the tablet and dilutions performed. The experiment began by determining the best wavelength at which to excite the riboflavin molecule‚ by examining the graph given in the laboratory manual[1]. Because plastic cells that absorb UV light were being used to hold the solutions
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with different dilution factors NAME & STUDENT ID: MANMINDER KAUR COURSE: Haematology 1 COORDINATOR: Genia Burchall PRACTICAL DATE: 26th July‚ 2012 DUE DATE: 10th August‚ 2012 ABSTRACT: This experiment aimed at determining the optical density in terms of absorbance of a solution using the different dilution factors to obtain a standard curve where interpretation of Beer’s Law is important to get the results. In order to frame this aim‚ the method of dilution factor was used
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Case Study Luke Tudor 09 Dec 2009 Microbiology‚ Vectors and Control DMS1515 Concerns have been raised about the safety of drinking water being provided for a large temporary community. The area is remote‚ rural‚ without proper sanitation and there are limited multipurpose water resources How could you ascertain the safety of the water? Potable water is fit for consumption by humans and other animals. Water may be naturally potable‚ as is the case with pristine
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Telecommunications Industry in India Industry Background The telecom sector in India is a booming market now. India is the world’s second largest mobile phone user with a total subscriber base of 894 million as of December 2011‚ and the third largest internet user with a subscriber base of 121 million as of December 2011. The total market values according to experts are $75.88 billion with a y-o-y growth rate of 26% and generate employment for about 10 million people. The services sector generates
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Student Loan Programs The beginning of a college education is an eventful and exciting chapter for America’s youth. Beginning college is also when responsibilities begin to kick in as well. Students must plan ahead how they intend to finance their education during their time at college and after completing their academic careers. Almost seventy percent of college students nationwide take out loans to help finance their education. Like any other loan‚ student loans must be paid off in a timely
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likely to be the biggest source of error. Dilution affected our 0.0100M Tris buffer by decreasing its pH. The buffer was originally set to a pH of 7.48‚ but the pH gradually moved down by a pH unit of about 0.1 after each dilution. This is agrees very well with what we expected prior to lab because the reading discussed how Tris buffers are affected by the concentrations. It even stated that it can be expected to change by 0.1 pH units for every tenfold dilution‚ so our buffer seemed to agree quite well
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Review Guide: General Questions/Skills: 1. Be able to draw a polypeptide given only the letter designations for the amino acids. 2. Given a list of 6 organisms (mentioned in class)‚ be able to draw the big tree‚ labeling three domains‚ the root‚ and relative branch lengths for the domain. Origin is on bacteria line in the middle. Archaea are generally shorter lines‚ bacteria are the intermediate lines and eukaryotes are the longest lines. Organisms: Are there going to be specific
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to determine whether non-magnetized zeolite‚ magnetized zeolite‚ or charcoal was the more effective sequestration agent for Procion Red Dye. A calibration curve was created with the known concentrations and the absorbances of the Procion Red Dye dilutions at λmax. The slope of the calibration curve was used to determine the concentration of the analytes. As a result‚ charcoal was shown to be the more effective sequestration agent. Introduction PAHs‚ polycyclic aromatic hydrocarbons‚ are organic
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Microbiology and Process Analysis laboratory 25/10/2013 Group 1 Microbiology laboratory Abstract The lab exercises were divided into three different analysis; microscopy‚ soil microbiology and bacterial growth. The main aim of laboratory work with Escherichia coli and soil sample was to introduce students to bacterial growth in pure culture and soil microbial flora. The experiment of bacterial growth in pure culture using optical density
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