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Topics > Microbiology > Bacteriology

	Project title	How much bacteria do our hands contain?
	Difficulty Level	Elementary school
	Main link	Click here to view this science project
Description
Although we can't always see them, microorganisms are present in almost all environments. Many can be grown in the laboratory on plates containing a solid, nutrient-rich medium (agar plates). After several days, a single bacterial cell grows into a population of bacterial cells that is visible to the naked eye. This population of cells is called a microbial colony. In this exercise we will test for the presence of microorganisms on our hands and on objects we are in contact with.
Materials
This idea is contained in a third-party website. To view the science fair projects, please click on the link above. Copyright in the third party website belongs to the relevant author.
Brief Instructions
[Please see third-party website for instructions]

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