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

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Micro Organisms
Genetic and biochemical similarities between contemporary cyanobacteria and eukaryotic chloroplasts are accepted to mean that

eukaryotes evolved from bacteria
eukaryotes evolved from archaea
oxygenic photosynthesis first evolved in eukaryotes
cyanobacteria arose from chloroplasts which escaped from plant cells

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