Micro Organisms
Eukaryotic cell organelles first emerged

when prokaryotes engulfed each other and became interdependent
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

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

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

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Micro Organisms
A characteristic of protein synthesis in both the archaea and eukarya is

transcription and translation are coupled
the initiator tRNA is charged with N-formyl-methionine
translation is inhibited by diphtheria toxin
proteins are synthesized from D-, rather than L-, isomers of amino acids

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