Micro Organisms
The unifying feature of the archaea that distinguishes them from the bacteria is

cytoplasmic ribosomes that are 70S
absence of a nuclear membrane temperature
habitats which are extreme environments with regard to acidity
presence of a cell wall containing a characteristic outer membrane

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Micro Organisms
Which of the following best represents the hierarchy of levels of biological classification?

Kingdom, phylum, class, order, family, genus, species
Class, order, kingdom, phylum, family, genus, species
Kingdom, phylum, family, class, order, genus, species
Phylum, kingdom, class, order, genus, species, family

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