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awesomedallin122

Answer:

Unicellular organisms are living organisms that exist as single cells. Examples include bacteria, such as, Salmonella and protozoa like Entamoeba coli. Additional example: Phytoplankton.

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recinossteven52
Unicellular organisms fall into two general categories: prokaryotic organisms and eukaryotic organisms. Prokaryotes include bacteria and archaea. Many eukaryotes are multicellular, but the group includes the protozoa, unicellular algae, and unicellular fungi.