IDENTIFYING GRAM POSITIVE COCCI As mentioned in Exercise 8‚ “Identifying Gram Negative Rods”‚ identifying bacteria is a common activity in the microbiology lab. Like the game Clue™‚ each time you gather a piece of information to solve the mystery‚ you gather some information that supports some identities and eliminates others from contention. In the lab‚ the process continues as you gather more information until only one microbe remains and all others have been eliminated as possibilities. Thus
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difference between a gram positive bacteria and gram negative bacteria is the differences in cell wall composition. Prokaryotes known as eubacteria have three basic forms: rods‚ cocci and spiral. The bacterial cell wall is the single most important contributor to cell shape. In addition to shape of cell wall‚ presence or absence of flagellum‚ and if present‚ positions of flagellum‚ the eubacteria can be classified according to Gram Stain. First and foremost‚ gram positive bacteria are
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Gram Stain: The important part of this experiment is being able to determine a bacterium based on its cell wall structure. It also helps indentify if the unknown organism is a Gram positive or Gram negative. This is the initial step that must be taken before any other lab procedure may continue on to ensure the purity is present‚ the arrangement of the cells‚ and the shape the cell has. The staining of the cell starts off with using the primary stain‚ Crystal Violet which is a purple color‚ to begin
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those of the host; thereby showing little or no effect to the host. 2. What are broad and narrow spectrum antimicrobials? What are the pros and cons of each? Broad spectrum antibiotics work against many types of organisms such as gram positives‚ gram negatives and anaerobes. The great thing about this is that these are prescribed empirically so that all potential bacteria are covered until the culture results return. The problem with the misuse of broad spectrums is the resistance it can cause
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Microbiology Lab ReportPractica #1BTC307LAmber AmelingmeierThursday‚ September 18‚ 2008OBJECTIVESIn this lab experiment two different types of bacteria‚ Escherichia coli and Staphylococcus aureus‚ were grown singly and mixed on four different types of agar in order to observe the varying morphologies within the colonies. Resulting data was analyzed to provide understanding of the use of differing culture media and conditions for bacterial growth. RESULTSFour different agar types were used in this
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Chapter 1: The Main Themes of Microbiology What is Microbiology? • micron = small and biologia = study of living things • Microbiology = study of small living things • How small is “small”? • What do we really mean by living? • Working definition: Study of entities too small to be seen with the unaided human eye. • (< 0.2 mm = 200 µm = 200‚000 nm) Types of Microbes Prokaryotes include Bacteria and Archaea Eukaryotes include Protista (Algae and Protozoa)‚ Fungi‚ and Animalia
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Microbiology Final exam Study reference 1. Gram Stain * Verify if bacteria are present or not. * Controls – positive (purple) – S.aureus negative ( red/pink) – E.coli 2. Endospore Stain Positive controller – B. magneterium Green spore- Positive Pink (vegetative ) – Negative 3. Acid fast Positive control – M. smeagmatis Blue – negative Pink /red- positive 4. Motility Positive control - P.vulgaris A. Non motile is negative test B. Motile is a positive test 5. Carbohydrates
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Importance of Microbiology| in Nursing Agriculture Pharmacy Advertisement Microbiology is a subject dealing with microbes and related concepts. Microbiology has come a long way since discovery of microbes and is presently of great help to mankind. It is used in health care‚ food production‚ diagnosis‚ production of alcohol‚ maintenance of sterility and cleanliness etc. Though the subject was initially limited to study of microbes and their characteristics or properties‚ latter it was explored to
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FST3202 Food Microbiology 2012/2013-1 Lecture 1. Introduction to Food Microbiology Prof. Madya Dr. Yaya Rukayadi Department of Food Science Faculty of Food Science and Technology Universiti Putra Malaysia Wednesday‚ 12-09-2012 BKTM-2 (10.00 – 12.00) FST 3202 – Food Microbiology Semester : 1 (2012/2013) Program : Undergraduate Student (prasiswazah) Credits : 3 (2-1) Class : BKTM 2 – Food 1 Day/Time : Wednesday‚ 10.00 – 12.00 Pensyarah : Prof. Madya
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Microbiology is the study of living organisms that are too small to be clearly seen by the unaided eye. The science of Microbiology dates back only to 200 years‚ yet the recent discovery of Mycobacterium tuberculosis DNA in 3000 year old Egyptian mummy reminds us that microbes have been around for much longer. Infact‚ Bacterial ancestors were the first living things to appear on Earth. The First observations: One of the most important discoveries in the history of Microbiology occurred in 1665
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