Bacteria Classification By Gram Staining THE AMERICAN UNIVERSITY IN CAIRO SCIENCE 453 : BIOLOGY FOR ENGINEERS REPORT No.1 Objective: To test a sample of laboratory prepared bacteria and categorise it according to Christian’s gram positive and gram negative classes and also by viewing it under a high powered microscope and oil immersions; classify its shape and note any special characteristics. Introduction: Bacteria was categorised into two groups in 1884 by the Danish Bacteriologist Christian, gram positive and gram negative by a staining technique where the ability to avoid de-coloration of Crystal Violet solution by alcohol would render the category of gram positive, and gram negative if the bacteria is de-coloured. This could be noted by the final colour of the bacteria: a violet colour where Gram positive and a pin....

Number Of Pages: 3

Number Of Words: 777

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