A water sample from a hot thermal vent contained a single-celled organism that had a cell wall but lacked a nucleus. What is its most likely classification?

A water sample from a hot thermal vent contained a single-celled organism that had a cell wall but lacked a nucleus. What is its most likely classification? 





A) Eukarya
B) Archaea
C) Animalia
D) Protista
E) Fungi






Answer: B


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