Micro Organisms
Which of the following microorganisms is classified as a member of archaebacteria?

Gyanobacteria
Trichomonads
Methanobacteria
Mycoplasma

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

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

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