Streptococci can give you strep throat. They are unicellular, prokaryotes that contain a cell wall. They are so small that a powerful microscope must be used to see them. In which kingdom would you place them?

Streptococci are bacteria, and the question describes them as unicellular prokaryotes. In the five-kingdom classification, prokaryotic bacteria belong to the kingdom Eubacteria. Protista and Fungi are made up of eukaryotic organisms, so Eubacteria is the correct choice.

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