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4) First, the sample would be diluted and brought to a state of homogeneity, then swabs of the sample would be placed on various growth media for inoculation. These samples would ten be incubated for a certain period, then inspected for growth of bacteria cultures. Many strains of bacteria would be expected, and samples from mixed-culture plates would be taken and further inoculated and incubated to isolate each culture and type of bacteria. Inspection of the individual cultures via microscope should lead to the identification of the different types of bacteria based on the arrangement and growth rate of the culture/responsiveness to certain growth media, as well as the cell shape of the bacteria themselves

5) Though most bacteria and other microorganisms are harmless or even beneficial to humans, some can cause disease or infection. These are known as pathogens, which literally means give birth to suffering, and that is exactly what they do. Adverse symptoms, when they occur, are generally caused by a bacterias use of resources and/or its waste products, but there several physical features that can increase pathogenicity. Some bacteria have flagellum, long tails that help them move and may help them attach and cling to

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