Deadly Invaders Project 1. A virus is an infective agent that has a nucleic acid molecule in a protective coat. They generally range in 20 to 300 nm‚ has RNA or DNA that multiplies in a cell. A lytic phase in a virus is when the conditions for infecting are favorable‚ when there are many “victim cells” and good conditions outside the cell. 2. Viruses are not alive‚ as they only have DNA/RNA and few other necessary ingredients of a cell. They lack too many things to be called living. Viruses reproduce
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Quantification of Microbes in Milk and Water Naomi Hall 10/20/14 BSC 381L H003 Group: Megan Baker‚ Katie Coe and Meagan Williams Abstract Coliforms are gram negative bacteria commonly found in the intestines of birds and mammals and are the most widely utilized indicators of fecal contamination. The purpose of this experiment was to test various water and milk samples for the presence of coliforms‚ specifically fecal coliforms. It was expected that fecal coliforms would be found in all
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^Definition of Microbiology – the study of microorganisms‚ which are organisms or agents‚ which are too small to be observed with the unaided eye. Objects having a diameter of less than 0.1mm cannot be seen with out the use of a microscope. Why do we study microbiology? Because microorganisms have a close association with us – the microbes are in us‚ on us and everything around us. They are essential for our own survival – we need them‚ they do not need us. Food Microbiology – a field on applied
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Societies Vol. 26‚ No. 2 Printed in U . S A . Phenotypic Description‚ Numerical Analysis‚ and Proposal for an Improved Taxonomy and Nomenclature of the Genus Zymomonas Kluyver and van Niel 1936 J. DE LEY Laboratory of AND J. SWINGS Microbiology and Microbial Genetics‚ Faculty of Sciences‚ State University‚ K . L . Ledeganckstraat 35‚ B-9000 Gent‚ Belgium One hundred thirty-eight phenotypic features were determined in 38 Zymomonas strains from diverse origin (Zairese fermenting palm
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Lab Report: Antibiotic Evaluation by the Kirby-Bauer Method Introduction Chemical antimicrobial agents are chemical compounds capable of either inhibiting the growth of microorganisms or killing them outright. Those which are taken internally to alleviate the symptoms of or promote healing from disease are called chemotherapeutic drugs‚ and among these is a class of compounds called antibiotics. In order for a chemotherapeutic drug to be classed as an antibiotic‚ it must be produced by
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Biology was fascinated me tremendously particularly when I was introduced to field of microbiology. I used to wonder how these primitive microbes grow and communicate with each other. Theoretical knowledge of microbiology grabbed my attention and made me curious about these tiny microbes which we cannot be seen through our naked eyes. Therefore I decided to pursue my higher studies and specialisation in microbiology. I started my graduation
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BioMi 2911 Spring 2014 RUBRIC FOR DESIGNING YOUR OWN EXPERIMENT: EXPERIMENTAL DESIGN AND MINI-PUBLICATION PART 1: EXPERIMENTAL DESIGN Many studies have shown that students learn much about how science is carried out by designing inquiry-based labs. With this in mind‚ a few times during this semester‚ we will ask you to work with your bench mates to design an experiment that will test a given hypothesis—first‚ about Koch’s Postulates‚ then about tracking bacteria in the environment. As
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clusters and produces catalase‚ which catalyzes hydrogen peroxide to water and oxygen. It contains a cell wall structure (including peptidoglycan and teichoic acid) and a low G + C content of DNA between 30-40 mol %. (Bauman‚ R.‚ & Masuoka‚ E. (2015). Microbiology: With diseases by body system (4th ed.). San Francisco: Pearson Benjamin Cummings. According to Chang (2008)‚ Staphylococcus includes 40 different species. Most are harmless and reside on the skin
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Introduction Gram staining was developed by Christian Gram in the 1800’s‚ a Danish bacteriologist. (Smith and Hussey‚ 2005) It was the first differential staining technique and most common used in microbiology. Furthermore‚ bacteria are transparent and cannot be seen through the microscope. For that reason‚ Gram staining is an important tool for distinguishing between two main types of bacteria Gram-positive and Gram-negative. The Gram stain differentiates the Gram positive and gram-negative on
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Micrbio Clicker questions: 1. Organisms that have a prokaryotic cell structure‚ no peptidoglycan in cell walls and unique cell membrane lipids would most likely be: A. Archaea 2. Who first published extensive observations of microorganisms? A. Anthony Von Leeuwenhoek 3. The primary use of Koch’s postulates is to? A. Demonstrate that a disease is caused by a specific microorganism 4. Microscope resolution ____________ as the wavelength of radiation used to illuminate the specimen
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