The first and second group contained Gram positive bacteria. The first group contained a population of Micrococcus that had been grown slowly and was still growing. The second group contained a population of Micrococcus that had been grown rapidly and was in the stationary phase. The third group contained a population of Gram negative bacteria. Each sample was placed in an HEPES buffer at a pH of 7.2 and concentration
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In March 10‚ the first procedure that was done was gram staining. The purpose of this procedure was to determine if the unknown bacterium is gram-positive or gram-negative‚ and also to determine the cell shape. Gram-positive cells will be purple while gram-negative cells will be pink. The methods for the Gram staining method first starts with a fixed smear of the bacterium‚ covered it with crystal violet for 30 seconds. Afterwards‚ it should be gently rinsed off with distilled water and be covered
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Bibliography: © The McGraw−Hill Companies‚ 2002 E X E RC I S E © The McGraw−Hill Companies‚ 2002 Gram Positive 38. General Unknown © The McGraw−Hill Companies‚ 2002
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Department of Food Science and Technology College of Agriculture and Food Science Visayas State University Baybay City‚ Leyte Microbiology of Fish and Fish Products Introduction: Fish is a major staple food in most parts of the world and are second only to meat as the major animal protein in most diets. Whilst foods such as ‘meat’ form relatively well -defined groups of raw materials‚ ‘fish’ constitutes a large range of types (some sources recognise over 20‚000 identified species)‚ caught over
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aerogenes Yeasty Saccharomyces Zygosaccharomyces Pink Micrococcus roseus Mouldy Aspergillus Penicillium Fresh fruits and vegetables Soft rot Rhizopus Erwinia Gray mold rot Botrytis Black mold rot A. niger Pickles‚ sauerkraut Film yeasts‚ pink yeasts Rhodotorula Fresh meat Putrefaction Alcaligenes Clostridium Proteus vulgaris Pseudomonas fluorescens Cured meat Mouldy Aspergillus Rhizopus Penicillium Souring Pseudomonas Micrococcus Greening‚ slime Lactobacillus Leuconostoc Fish Discoloration
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| Lysozyme activity | Observed in tears and saliva | | Connie Jamieson | 3/1/2012 | | Abstract Lysozyme is an enzyme found in both tears and saliva. Each time we blink our eyes‚ our eyelids wash tears over the surface of our eyes. In addition‚ our mouth is continually producing saliva. A spectrophotometer set to 450nm was used to measure the effect of lysozyme on bacteria. The absorbance or optical density was measured for each sample at specific times with a total measuring time of
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History of Sexually Transmitted Diseases Sexually Transmitted Diseases‚ or commonly known as STDs‚ are the most common diseases known to man and it is one of the largest growing issues not only in the United States of America but around the globe. Sexually transmitted diseases are primarily spread through sexual contact from individual to individual‚ whether it is oral‚ vaginal‚ or anal sex. It can also be passed on by skin to skin contact such as through skin lesions‚ sores‚ sharing needles
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lab report is worth 100 points towards your final lab grade. Each Q is worth 2 points unless otherwise noted. Also‚ per the Honor Code‚ this work must be your own. This is due Mon. 10/8 at 11:59 PM. The theme of this lab is the identification of unknown bacteria and viruses in a lab. Selective vs. Differential Media Selective vs. Differential Media Use the following website to help you answer Q 1 and 2 http://www.highlands.edu/academics/divisions/scipe/biology/labs/rome/selectivedifferential
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Thus‚ identification of microbes is a process of elimination based on logic and carefully-performed tests to determine the capabilities of the unknown microbe. The pieces of evidence used in the microbiology lab are your observations of the shape‚ morphology‚ Gram reaction‚ and the results from biochemical tests performed using a pure culture of an unknown organism. Results are compared to tables of known results for all bacteria with similar shape‚ morphology and Gram reaction to see where similarities
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Pharmaceutical Microbiology CLASS CODE: MP202 SARA ASHOUR Signature ……………………………….. Date ……………………………….. Total Word Count 1492 I declare that‚ except where specifically indicated‚ all the work presented in this report is my own and I am the sole author of all parts. Toxic shock syndrome (TSS) is an uncommon but serious systemic infection which can occur in males and females of all ages. Symptoms include fever‚ hypotension
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