Bacterial colonies are defined as the assamblage of bacteria growing on a solid surface such as the surface of an agar culture medium, the assemblage often is directly visible, but also may be seen only microscopically.
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Several individual organisms (especially of the same species) living together in close association.
The bacteria in the colony would be genetically too similar.
large colonies of bacteria know to exist in
for 3.14 time it would be 20mm
Under a microscope a yesat should have long filamentous hyphae whereas bacteria are simple rods or cocci. Acidic or antibacterial mediums should kill most bacteria most fungi (including yeasts) will remain living.
Bacteria looks more glossy, white or yellow Molds will have a fuzzy look to them
Robert Koch, he used potato slices to grow individual bacteria colonies.