Micro Organisms
Archeal cells usually do not contain peptidoglycan, rather contain pseudo-peptidoglycan which is mainly composed of

N-acetyltalosaminuronic acid and D-amino acids
N-acetylmuramic acid and L-amino acids
N-acetylmuramic acid and D-amino acids
N-acetyltalosaminuronic acid and L-amino acids

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

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

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Micro Organisms
Eukaryotic cell organelles first emerged

from a specialized lineage of cells within the kingdom Protista
when bacteria made their first attempts at reproduction
just before the origin of the animal and fungal kingdoms
when prokaryotes engulfed each other and became interdependent

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