Microbiology Laboratory Report Identification of Unknown Bacteria 6O BIO 251-7H1 Gram Stain Summary: Out of 28 Unknown microorganisms‚ slant 6O was randomly selected‚ and subjected to testing in order to identify it’s species. Seventeen of the unknown bacteria were classified as Gram-negative bacilli: Corynebacterium pseudodiphtheriticum‚ Enterobacter aerogenes‚ Eschirichia coli‚ Flavobacter capsulatum‚ Helicobacter pylori‚ Klebsiella pneumonia‚ Klebsiella oxytoca‚ Proteus hauseri‚ Proteus
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the George Lynn Cross Hall‚ which is touched by hundreds of students entering the building every day. The most important exercises performed include gram staining‚ which
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Microbiology Lab Quiz #2 Study Guide Exercise 9 -- The Gram Stain Compare and contrast simple and differential staining techniques. Simple Staining Simple staining is useful in determining the basic morphology of an organism. Simple staining involves only one reagent i.e. crystal violet‚ basic fuchsin‚ or methylene blue. Simple dyes used to stain bacteria have a positive charge cationic (+)‚ therefore‚ they are attracted to the bacteria that are usually negatively charged anionic (-) Depends
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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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Microbiology report Gram stain Objectives: The aim of this experiment was to be able to stain bacteria correctly and be able to see it under the light microscope. In 1883 Hans Christian Gram discovered an important staining method that is used extensively today. The stain is called the Gram Stain. This experiment was done in order to differentiate microbes into two basic groups: Gram positive microbes and Gram negative microbes. The purpose of this experiment was to learn the gram staining method and
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PART ONE: GENERAL BACTERIA IDENTIFICATION Review the dichotomous key in Figure A‚ the bacterial shapes in Figure B‚ and the Gram stain information below. You will use all three to determine to which major group unknown bacteria belong. Gram Stain Results: Purple = Gram positive Red = Gram negative Neither purple nor red = No cell wall (neither Gram positive nor Gram negative) Review Figure C on the following page. Use Figure C to identify the type of arrangement displayed by the unknown
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_Control_______ variable. Through the semester‚ you have used two bacteria that produce colorful colonies: one produce yellow colonies‚ another one pink. What are the names of these two bacteria? Are they Gram+ or Gram-? Micrococcus Luteus‚ yellow colonies‚ gram + Serratia Marcescens‚ pink colonies‚ gram - There was one bacterial
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the knowledge gained from the sessions in the laboratory‚ we can now integrate what we have learned to the process of finding out the unknowns given. Materials and Methods The professor gave out the unknown specimens. It contained one-‐gram positive and one-‐gram negative bacteria from the given list. I was assigned unknown A. The process of identification was achieved by utilizing procedures learnt during the semester. Procedures were followed as stated in the lab manual (1). Since the sample contained
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white/gray 9. Cool then weigh the crucible Data: Mass of crucible 23.15 grams Mass of Crucible with crushed hydrate 29.62 grams Mass of crushed hydrate 6.47 grams Mass of crucible with crushed hydrate after heating 26.64 grams Mass of crushed hydrate after heating 3.49 grams Therefore‚ mass of Water that has escaped = (mass of crushed hydrate) - (mass of crushed hydrate after heating) Mass of H2O = 2.98 grams Therefore mols of H2O = (2.98g) * (1mol)\(18g) = .165 mols H2O So‚ mols of
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Key: B Question 5 of 12 2.0 Points Transmission electron microscopes have a maximum magnification of A.1‚000X B.100‚000X Correct C.500‚000X D.1‚000‚000X Answer Key: C Question 6 of 12 2.0 Points Which stain would be the best
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