When bacterial cultures are grown in a laboratory, they are growing in a captive environment, somewhat like a tiny microbial zoo. These captive-bred bacteria are totally dependent on people to provide the proper environment for their survival and growth. A…
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Bacteria are prokaryotes, one of the three great classes of life. Their cells have no nuclei, and generally lack organelles, small sub-units bound in membranes. They are about a tenth the size of the eukaryotic cells found in plants and…
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In order to view individual bacteria through a light microscope, a bacterial smear must be attached to a slide and then stained. Here is the procedure. First, use a wax pencil to draw a circle on the microscope slide to…
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Before bacteria can be viewed through a microscope, a bacterial smear must first be created and then heat fixed. Heat fixing kills the microbes and firmly attaches them to the slide, so that the sample is not washed away during…
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There are many staining techniques that can be used to view bacteria. Simple stains employ only one dye, and provide information limited to cell shape and grouping. The use of differential stains is more complex. Differential protocols employ a series…
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Gram, Acid Fast and Endospore stains; MacConkey’s, Mannitol Salt, and Blood Agar media as well as the API-20 test strip all provide information to identify microbes. Most of these are procedures taught in introductory microbiology courses, and are useful in…
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November 6, 2013 Social Science
There are various types of intelligence. There is manual intelligence that a mechanic or someone who works with his hands has. There is intellectual intelligence which we are most familiar with. There is imaginative intelligence which allows people like Mozart…
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Viruses are simple, yet very successful non-living, infectious agents. These efficient parasites make a living commandeering the cells of organisms and turning them into virus factories. A virus undertakes this monumental invasion with very little of its own equipment. So,…
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Research LFF Reports As part of its mission to support public libraries, Libraries for the Future known until recently as Americans for Libraries Council’ sponsors research and cross-disciplinary discussion on a range of issues relevant to libraries and society today….
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Campaigns: New England Southbury, CT The House That Volunteers Built Residents Lead Way to New Library at Heart of Community Southbury (CT) Public Library In A Nutshell The rapid growth of Southbury, CT made the library too small to meet…
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