Identication Of Bacterial Species

Identification of bacteriuml SpeciesMicrobiology is the study of bacterium , microscopic , a st e genuinely last(predicate)ular organisms that sight have many contrasting surfaces and shapes , or morphologies . bacterium exist in every possible habitat on Earth - in soil , in water , and nonetheless on the skin and in the gastrointestinal tract of the forgiving body . While most of the bacterium that live in our bodies argon either harmless or beneficial , near bacteria are pathogens , meaning that they cause infection or disease . Correct identification of these unknown pathogenic bacteria is crucial in determining the appropriate type of antibiotic drug therapy that is necessary to eliminate bacterial infections when they occurCharacteristics such as electric cell size and shape , relative thickness of cell fence , tendency to collection , presence of flagella , and world power to form spores all help in the identification of unknown bacteria . other(a) distinguishing bacterial characteristics include hemolysis patterns (i .e , ability to break stamp out red blood cells ) and ability to ferment lactose (i .e , the ability to use lactose as an alternative source of push under anaerobic conditionsEach bacterial species displays a specific syllable structure which is determined by its cell wall and cytoskeleton . Most bacteria can be factorrally characterized as coccus (i .e , spheric , bacillus (i .e rod-shaped , spirillum (i .e , helical ) and vibrio (i .e , juicy rod-shaped . Because bacteria are microscopic in size , their classification based simply on morphology is not sufficient for identification . Therefore , other classification systems are neededThe bacterial cell wall is critical to the survival of bacteria , and its arrangement helps to differentiate bacteria into either confirming or Gram-negative groupings , depending on the reaction of the cells to the Gram stigma . Gram-positive bacteria (which speckle purple ) have a very thick cell wall , while Gram-negative bacteria (which stain pink ) have a thinner cell wall . Bacteria can also be place by colony morphology or their tendency to group together in pairs (e .g . Neisseria , chains (e .g , Streptococcus , or clusters (e .g .

StaphylococcusSome bacteria have one or more flagella , rigid protein structures that can rotate and are used for motility . The presence or absence of flagella can be determined using a motility media , such as a semi-solid agar . Bacteria are inoculated into the medium , and over time , bacteria with flagella volition migrate away from the site of inoculation while non-motile bacteria will not . Other bacteria , such as Bacillus and Clostridium , produce dormant structures called endospores (or spores which are extremely resistant to environmental and chemical stresses and allow spore-forming bacteria to stick up extreme conditions . The tough outer covering of spores makes them difficult to stain , but special procedures such as malachite green stain and safranin counterstain can be used for spore visualizationThe most commonplace method of identifying bacteria involves isolating them growing them in coating media , and then examining them closely under a microscope for characteristic features . bacterial can also be identified by their reception to differential staining , their growth rates in different selective media , serological methods that rely upon antibodies for bacterial identification , and gene sequencing . In the laboratory bacteria may...If you want to get a full essay, order it on our website: Orderessay

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