colonies. Bacteria are classified on the basis of many characteristics. Morphological and physiological features such as cell shape‚ motility‚ formation of spores and other distinguishable structures‚ and reaction to Gram stain is a good start in identifying bacteria. Other staining techniques such as Acid Fast stain are also useful in determining species. More important in identification of a genus and species of bacteria are biological tests‚ including the determination of the types of nutrients
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bacteria through direct and indirect staining technique. Hypothesis – The experiment will allow for further insight into stained organisms‚ allowing extended contrast‚ differentiating shape and structure through utilization of microscope. Procedure – Instructions followed as per procedure‚ specimens viewed through v-scope‚ using 10x‚ 20x‚ and 40x stained wet-mount. Observations compared amongst one another from cd-rom. Spirillum bacteria Bacillus Cheek Swab Yeast Analysis
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1995 Del Mundo‚ Layah Basella rubra as a biological stain Experimental The alugbati extract turned out to be favorable stain for plant nuclei and organelles especially for Hydrilla verticillata and as substitute for crystal violet or safranin in Gram staining. The extract stained the bacteria red-orange and the plant nuclei‚ and the cytoplasm red and light pink‚ respectively. The study is limited to the ability of Basella rubra (alugbati) to be used as a biological stain 2011 Gel-O-Fury- Saavedra‚
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Unknown #1 Vomit Serratia marcescens & Bacillus cereus Biol 251 Microbiology 5/14/2009 Introduction The purpose of this study is to differentiate and identify two unknown organisms provided by the instructor in a nutrient broth. It is only known that the two organisms are from vomit; one is gram-positive and the other is gram-negative. It is necessary to first separate the two organisms by inoculating a nutrient agar plate using the streak-plate method. The
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Unknown Lab Report Unknown Organism #6 Ann Le (Phuoc) May 6‚ 2010 Dr. Carrington Microbiology Lab- MW 12:50 Le 1 I. Introduction My unknown organism #6 is Morganella morganii‚ which is a gram-negative bacillus rods commonly found in the environment and also in the intestinal tracts of humans‚ mammals‚ and reptiles as a normal flora. (3‚ 5) This bacterium Morganella morganii‚ was first discovered in the 1906 by a British bacteriologist named H. de R. Morgan. (2) Despite its wide
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classification of the invisible bacterial life. Bacterial classification is based on several major properties‚ CLASSIFICATION OF BACTERIA BASED ON GRAM STAINING This method of classification of bacteria was discovered by Hans Joachim Christian Gram 1883‚ a Danish Physician‚ while attempting to differentiate bacteria from human tissue by different staining methods. He noted differences in stain retention by bacteria due to
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the other. At the end of the experiment three microorganisms Bacillus azotoformans‚ Staphylococcus aureus‚ and Escherichia coli was identified and one result was inconclusive. The focus of this paper will be on the description of the just one of the three bacteria and some of its effects on humans. The first test done was a differential stain (gram stain) to determine the unknown microorganism cell shape and arrangement. The gram staining is done by first putting a sample of the unknown bacteria on
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identity of unknown number 34‚ a gram stain‚ citrate utilization test‚ and a urease detection test. These tests are explained in detail‚ and the method of performing the tests is described. The tests showed that the bacterium was gram-negative bacilli that did not utilize citrate‚ and the ability to hydrolyze urea using urease. These results indicate that the identity of unknown number 34 is Proteus mirabilis. Introduction Proteus mirabilis is a gram-negative bacillus bacterium. It is found naturally
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kingdom Protista b. have petidoglycan in their cell walls c. belong to the domain Bacteria d. are prokaryotic ___2. Identify the correct format for writing the genus and species of a given organism? a. bacillus Cereus b. Escherichia Coli c. bacillus coagulens d. Streptococcus epidermidis e. Micrococcus luteus ___3. The “magic bullet‚” capable of killing a particular disease causing microorganism‚ was first isolated when a. Louis Pasteur and Robert
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If there is any update‚ it will be posted no later than this Saturday (2/8/14) Identify the following individuals’ major contributions to science Ehrlich – magic bullet Hooke –cell theory and microscope Jenner - cowpox Lister- disinfectant (phenol) Koch- kochs postulate Lancefield- immunology to classify via serotypes Linnaeus- nomenclature Pasteur- pasteurization‚ vaccine‚ microbes in nonliving matter‚ aseptic techniques‚ fermentation. van Leeuwenhoek- described live organisms with Hooke’s microscope
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