Micro Organisms
The phospholipids present in cytoplasm membrane of the archaeo-bacteria is

phosphoglycerides
polyisoprenoid branched chain lipids
None of these
polyisoprenoid

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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
presence of a cell wall containing a characteristic outer membrane
habitats which are extreme environments with regard to acidity

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