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Project title How much bacteria do our hands contain?Featured science project
Difficulty Level Elementary school
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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. 
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