Dongsheng‚ and Ruifu Yang. "Molecular Darwinian Evolution of Virulence in Yersinia pestis." Infection and Immunity. American Society for Microbiology‚ n.d. Web. 20 Apr 2013. <http://iai.asm.org/content/77/6/2242.full>. Beveridge‚ Terry. "Structures of Gram-Negative Cell Walls and Their Derived Membrane Vesicles." Journal of Bacteriology. American Society of Microbiology‚ n.d. Web. 20 Apr 2013. <http://jb.asm.org/content/181/16/4725.full>. Schoenstadt‚ Arthur.(1) "Bacteria that causes the Bubonic
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· Taxonomy ○ Science of classification ○ Provides an orderly basis for the naming of organisms and for placing organisms into a category (taxon) ○ Makes use of and makes sense of the fundamental concepts of unity and diversity among living things ○ Basic principle is that members of higher-levels groups share fewer characteristics than those in lower-level groups * Escherichia coli - rod shape and have a Gram-negative cell wall * Even members of the same species display variations
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Toxoplasma gondii: A Review of Parasitology‚ Pathology‚ and Epidemiology Toxoplasma gondii: A Review of Parasitology‚ Pathology‚ and Epidemiology Parasites are naturally “clever‚” yet insidious organisms. You may have a parasite inside you right now‚ without even knowing it. An effective
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to live harsh environments. Prokaryotes however are unable to live in very salty or sugary foods like cured meats or jams because they lack the essential nutrients that water etc provide. In response to these harsh conditions endospores are formed. In essence‚ endospores are a touch wall surrounding a set of chromosomes. Eventually as water is removed from the cell its metabolism halts and the rest of the cell disintegrates. In this manner prokaryotes die out in harsh conditions like sugary or
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For my project‚ I chose tetanus because when I was eleven‚ I got my tetanus shot. At the time‚ I didn’t know what tetanus was so my dad explained it to me. I thought the topic was interesting. At the time‚ I thought that tetanus was only caused by rust getting on an open wound or cutting yourself with something rusty. I only knew that it stiffened your face muscles and could kill you. When I saw tetanus on the list on Edmodo‚ I just knew I had to learn more about it. I am so glad that I chose it
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Introduction The purpose to this lab was to isolate and identify two unknown bacteria from a mixed culture provided to us by our instructor. This study was done by applying all of the methods that have been instructed on thus far in microbiology laboratory class. Each test performed‚ provided us with some key information about the unknown microbes in question and how the bacteria function. Materials and Methods Over a two week period‚ eight prepared types of test media were provided to
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Diversity and Ubiquity of Microbes Pre-Laboratory Questions 1. What environmental settings would you expect to provide rich sources of microbes‚ in terms of overall numbers and different microbial types? Since the most of the microbes are ubiquitous‚ they are readily found in public bathrooms‚ phones‚ countertops‚ door handles‚ kitchen sinks‚ and human body parts such as the face and hands (Sherwood‚ 2017). In addition‚ public places exemplified by hospitals‚ grocery stores‚ and schools present an
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safranin counterstain GRAM NEGATIVE CELL WALL 10 5 ENDOSPORES 11 Resting‚ dormant cells produced by some G+ genera: Clostridium‚ Bacillus & Sporosarcina Have a 2-phase life cycle – vegetative cell & an endospore sporulation -formation of endospores germination- return to vegetative growth hardiest of all life forms withstand extremes in heat‚ drying‚ freezing‚ radiation & chemicals not a means of reproduction ENDOSPORES 12 resistance linked to high levels of calcium & dipicolinic
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knowing the causative agent of disease‚ knowing if the microorganism obtains any beneficial properties and knowing the correct microorganism to use to create a successful antibiotic. Implementing the experimental methods learned thus far in the microbiology laboratory allowed an unknown bacterium to be identified as a result of this study. This study allows the student to exercise their ability to use and understand sterile techniques‚ transmission‚ and prevention of microorganisms. Materials provided
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to be a Gram-positive cocci. This test eliminated all possible Gram-negative bacteria‚ Gram-positive rods and Gram-positive spirillium. Next‚ the endospore test determined whether or not the Gram-positive bacteria contained endospores. With the use of malachite green‚ steam‚ and safranin it was found that unknown bacteria 32 did not contain endospores. This eliminated Gram-positive cocci Sporosarcina spp. The oxidase test is a test using an Oxidase swab. The oxidase swab contains a chromagenic reducing
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