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

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

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Micro Organisms
Eukaryotic cell organelles first emerged

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

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