Jul 28, 2017

Is the microorganism pathogenic or non-pathogenic? Can it be both in the human?

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Introduction to the Microbial World; History of Microbiology Pt 2


Introduction to the Microbial World; History of Microbiology 2 The Session Long project for this course will be to compare and contrast specific characteristics of a pathogenic and non-pathogenic microorganism. The purpose of the SLP is to provide you with the opportunity to study two microorganisms in detail. Through this process you will acquire valuable knowledge in regards to the significant attributes associated with each microorganism. You will also understand the importance that microorganisms play in our lives. You will use the book: A Concise Manual of Pathogenic Microbiology for much of this SLP. The Session Long Project for this course will be divided into five modules as follows: Module I. Select a microorganism that resides in the human body for this SLP. Begin your research in "Chapter 2: Host-Microbe Interactions," in A Concise Manual of Pathogenic Microbiology (Mishra and Agrawal 2013). Is the microorganism pathogenic or non-pathogenic? Can it be both in the human? If so, under what disease and health condition can the disease be produced? For this module you are to do the following: Module I. Select a resident microorganism for the SLP. Provide a general description of the microorganism, where in the human it resides, and the reasons you selected it for the SLP. Be sure to use the scientific name for the microbes selected for the SLP. (Also the genus and species of each organism must be written in italics. The genus of the organism is always capitalized while the species is not capitalized. For example, Actinomyces bovis.) Discuss the ecological niche that each microorganism is found in its natural environment. An ecological niche is that area or space in the environment where a specific species of microorganisms can survive and reproduce. "Certain combinations of environmental conditions are necessary for individuals of each species to tolerate the physical environment, obtain energy and nutrients, and avoid predators" (Pidwirnery, 2006). What are the growth conditions required by this microorganism and how do they relate to where in the body they reside? Be sure you understand the difference between a pathogenic and non-pathogenic microorganism. Is this organism a pathogen or non-pathogenic (consider the terms, opportunist and symbiont)? Can it be both? If so, under what conditions? Definition of Pathogenic and Opportunistic Microorganisms Pathogenic Microorganisms are defined as: Microorganisms which have virulence factors and can cause disease in hosts with a normal defense capacity. Virulence factors may involve resistance to nonspecific host defense factors. Opportunistic Microorganisms are defined as: Microorganisms which only can cause disease if host resistance is (sufficiently) decreased.
 Recommended format for SLP Please think through how you organize your material and how it is presented. Here is a suggestion, but you are free to organize your presentation in a manner that is comfortable to you. The major headings are approximate descriptions of each SLP module: 

Module 1 - Introduction: Organism 1 • Growth requirements, physical and chemical environment • Role in human health Discussion for SLP
Conclusions for SLP Note: A "PR" grade will be assigned to SLP Module assignments where critical thinking is not an important factor. The "PR" grade means "Progress"; however, in practical terms it means that the student`s work is satisfactory. Your assignment is due by the Monday following the end of this Module. Please upload your case assignment. Session Long Project Assignment Expectations Length: Each module SLP should be approximately 2-4 pages or approximately 600 to 1200 words. References: At least two references should be included from academic sources (e.g. peer-reviewed journal articles). Required readings are included. Quoted material should not exceed 10% of the total paper (since the focus of these assignments is critical thinking). Use your own words and build on the ideas of others. When material is copied verbatim from external sources, it MUST be enclosed in quotes. The references should be cited within the text and also listed at the end of the assignment in the References section (preferably in APA format). Organization: Subheadings should be used to organize your paper according to question Format: APA format is recommended (but not required) for this assignment. See Syllabus page for more information on APA format. Grammar and Spelling: While no points are deducted, assignments are expected to adhere to standards guidelines of grammar, spelling, punctuation, and sentence syntax. Points may be deducted if grammar and spelling impact clarity. The following items will be assessed in particular: • Relevance (e.g. all content is connected to the question) • Precision (e.g. specific question is addressed. Statements, facts, and statistics are specific and accurate). • Depth of discussion (e.g. present and integrate points that lead to deeper issues) • Breadth (e.g. multiple perspectives and references, multiple issues/factors considered) • Evidence (e.g. points are well-supported with facts, statistics and references) • Logic (e.g. presented discussion makes sense, conclusions are logically supported by premises, statements, or factual information) • Clarity (e.g. writing is concise, understandable, and contains sufficient detail or examples) Objectivity (e.g. avoid use of first person and subjective bias)

Resident Microorganisms: Escherichia coliNameInstitution Resident Microorganisms: Escherichia coliIntroductionEscherichia coli are both a pathogenic and non-pathogenic bacteria that infest the gastrointestinal tract of most mammals, including human beings. The bacteria derive its name from Dr. Theodor Escherich, who discovered it in 1885. The bacteria belong the Family Enterobacteriaceae, which is derived from the Greek term for the intestines, enterikos. I chose this particular microorganism because it is prevalent in human beings, and one of the most easily transmitted bacteria. In fact, the bacteria invade the bowels of newborn babies within 40 hours after birth. In addition, it plays an important role in human health for being a deterrent for harmful bacteria as well as causing infections in some cases. Because of its former role, it E. coli has a symbiotic relationship with the host animal. Ecological nicheE. coli survive in places where there is water and animals. Accordingly, it is common in:Farm AnimalsResidential Areas (septic tanks)Sewage Treatment PlantsSurvival and Growing ConditionsThe environmental conditions necessary for E. coli include temperatures of about 37 °C (98.6 °F), which is similar to the body temperature of most warm blooded animals in which it is found. However, some strains of the bacteria can thrive in higher temperatures (up to 49 °C (120 °F), which could be the conditions inside ...

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