Lab Report Microbiology Introduction Bacteria can be found almost anywhere. For human life‚ some help us‚ some hurt us‚ and others are neutral. It is now known that good bacteria‚ or normal microflora‚ can reach 1014 microbial cells. This is far more than the 1013 cells that make up the human body (Tannock‚ 1995). The total number of bacteria on Earth is estimated to be around 4-6 x 1030 (Horner-Devine‚ 2004). It is important to know the extent of bacteria‚ how they live‚ and how they are
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| Gram Negative Unknown | Biology 3444-006 | | Lena Wallace | 11/7/2011 | | Abstract: The purpose of this lab was to identify an unknown bacteria culture using differential tests. The identification of the unknown culture was accomplished by identifying the bacteria based on its specific metabolic characteristics and morphology. It is suggested that culture 11 is a sample of Enterobacter aerogenes. Introduction: This experiment was centered on metabolic and biochemical testing
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Isolation and Identification of Staphylococcus aureus and epidermidis Wendy Heck Bio 175: General Microbiology Fall 2012-11-21 Staphylococcus aureus is the most pathogenic for humans and Staphylococcus epidermidis is part of the normal flora and is of low pathogenicity. Staphylococcus epidermidis and Staphylococcus aureus are two medically important species of bacteria. A culture from the nose and throat was taken to perform whether or not Staphylococcus epidermidis or Staphylococcus aureus
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3.10 Results of Experiments After performing all the experiments with predetermined values of process parameters‚ the tensile strength is measured and the micro hardness is measured. The results are given in the table 3.5. Table: 3.5 Ultimate Tensile Strength and Micro hardness of SMAW & TIG for Experimentation Exp. No Groove Angle (Degree) Root Face (mm) Root Gap (mm) SMAW TIG UTS (MPa) Vickers Hardness (Hv0.1) UTS (MPa) Vickers Hardness (Hv0.1) 1 30 1 0 304 209 358 220 2 30 1.5 1 275 210
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prevents contamination from unknown cultures. 3. Does your lab report contain any messages when your inoculation was not complete? What change in the traffic signals indicates an unsuccessful inoculation? Answer: The lab report does not contain any messages about inoculation. There’s only a reference if auto-inoculation was used. The traffic signal light will turn red if the inoculation was unsuccessful. 4. Does you lab report contain any messages when you don’t follow aseptic procedures for
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Pathogenic Micro MLST assignment 1. MLST uses the sequence information within a set of housekeeping genes to determine the type of the organism. For each gene the dissimilar sequences are noted to be different alleles. MLSA is very similar to MLST but uses linked sequences to derive a phylogenetic relationship. MLSA is generally used to progress species descriptions whereas MLST is used with species that are already distinct. In this lab we are performing MLST. 2. The 16s rRNA gene is highly conserved
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The micro-hardness test can measure the case to core depth parts. Micro-hardness testing is required where the superficial hardness test is not conceivable due to material’s small geometrical shape. The welded part we were going to examine‚ experienced the similar criteria since the welded bead of the joint was way too small. To test the hardness of our welded area we had gone through a micro-hardness test using a Shimadzu micro-vicker hardness testing machine. In
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Introduction The acid-fast stain was developed in 1882 by Paul Ehrlich. Ehrlich was working with Mycobacterium tuberculosis‚ the bacilli responsible for tuberculosis‚ and found a technique that renders M. tuberculosis distinguishable from nearly all other bacteria. Acid-fast staining is‚ therefore‚ known as a differential stain. Mycobacterium and some Nocardia species are considered acid fast because‚ during the acid-fast procedure‚ they are able to retain the primary dye even when decolorized
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lifetime (47 years of full-time work) this gap amounts to a loss in wages for a woman of $700‚000 for a high school graduate; $1.2 million for a college graduate and $2 million for a professional school graduate. (Census Bureau reports and data‚ Current Population Reports‚ Median Earning of Workers 15 Years Old and Over by Work Experience and Sex. Updated September 2009) from a feminist prospective‚ I think this discrimination exists‚ because women’s role is considered to the homemaker and caregiver
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Methyl Red and Voges-Proskauer Test The Methyl Red test shows which bacteria are creating stable acids through mixed acid fermentation of glucose. This helps to identify enteric bacteria by examining how they metabolise glucose. Every enteric bacteria first produces pyruvic acid from metabolism of glucose. A methyl red positive enteric bacteria‚ uses the mixed acid pathway when breaking down pyruvic acid to different acids‚ like lactic‚ acetic‚ and formic acids. The Voges-Proskauer test determines
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