paper is to explore the different types of antimicrobial agents and the differences between viral and bacterial infections. Antimicrobial Agent Categories There are several antimicrobial agents to treat infections. Beta-lactams are the types ending in “illin” and those beginning with “ceph” or “cef” such as penicillin and the cephalosporin. The mechanism of action is the inhibition of bacterial cell growth by interference with cell wall synthesis‚ which bind to and inactivate the penicillin-binding
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What is Microfiber? Microfiber or microfibre refers to synthetic fibers (fiber) that measure less than one denier. The most common types of microfibers are made from polyesters‚ polyamides (e.g.‚ nylon‚ kevlar‚ nomex‚ trogamide)‚ and or a conjugation of polyester and polyamide (Wikipedia‚ 2012). Microfiber technology is nearly 20 years now. Therefore‚ microfiber is widely used in different aspects‚ such as: clothing‚ insulation‚ basketballs and cleaning. In this article‚ I would focus on the
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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 experiment. The first (Nutrient) allowed for growth of both E. coli and S. aureus. The second agar used (MKL) inhibited the growth of S. aureus but allowed the growth of E. coli. The third (ASH) yielded growth of both bacterial species. The fourth (Mannitol) was found to inhibit growth of E. coli (Table 1). Table 1. Indication
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Introduction There are both virulent and non-virulent bacteria and fungi that grow on plants. It is difficult to distinguish between the two without proper inspection and diagnosis of the diseased plant to know whether the bacteria or the fungus in question is the virulent or non-virulent one. Therefore pure cultures need to be isolated to know with absolute certainty which is the causative bacteria or fungus. Potato dextrose agar is a good nutrient agar for mycelia to thrive on which is present
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References: Bates‚ S.T. and Cropsey‚ G.W. “Bacterial Communities Associated with the Lichen Symbiosis.” Applied Environmental Microbiology‚ 2011‚ vol. 77‚ Issue 4‚ pp 1309-1314. Jobaggy‚ E.G. and Jackson‚ R.B. “The distribution of soil nutrients with depth: Global patterns and the imprint of plants
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INDIVIDUAL BACTERIAL COLONIES ON SOLID MEDIA Robert Koch developed a method for isolating pure cultures on solid media in 1883. To this end he added agar (a solidifying agent) to liquid nutrient broth; the nutrient broth supports the growth of a wide variety of microorganisms while the agar provides a solid substrate on which bacteria can be mechanically diluted and therefore isolated as independent colonies representing different bacterial species. The isolation of independent bacterial species from
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Evolution as a theory * Theory- in science‚ a well substantiated explanation of some aspect of the natural world Evolution- the accumulation of inherited genetic changes within populations over generations * Does not refer to changes that occur in an individual within its lifetime * Not limited to speciation that may only occur over long periods of time * Can occur over a few generations‚ and is most commonly expressed as an adaptation to a changing environment or the change in allele
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Bacterial cells are Prokaryotic cells. These cells have several internal structures and surface structures. The cell walls are of two types‚ gram positive and gram negative. Out of all the structures‚ the two selected structures are the cell- wall and endospores. The cell- wall of bacterial cells is found in three distinct shapes such as spherical‚ spiral and rod shaped. The cell wall of the bacterial cells is composed of the proteins and polysaccharides. This is collectively called peptidoglycan
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this lab was to investigate the bacteriophage (If present in sample collected) by testing the phage on a specific strain of bacteria and to observe its characteristics. This same approach can be used when testing for resistance evolution within bacterial strains. Our hypothesis states that bacteriophage will not be present within our sample from East Lake. With the use of a phage buffer and soft agar‚ it provides an even suspension and growth of cells. This is essential for seeing lysis caused by
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National Board Dental Examinations TEST PACKET f-fL4 Compiled‚ released items from approximately 1998-2005 21 1 East Cl~jcago Avenue Chicago‚ Illi~~ois I 3 12-440-2795 Fax: 3 12-440-2820 6061 E-Mail: ASDA@ASDAnel.org Website: v‚rw\v.ASDAnet.org TEST PACKET I-M National Board Dental Examination Part I (Compiled‚ released items from approximately 1998-2005) Con tents Page Randornly ordered test items ...........................................................3 Answer Key..
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