Micro Organisms
The binomial name of a microbe is composed of

its genus and species names
its genus name and a species modifier
its kingdom and genus names
its family and class names

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

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

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