Micro Organisms
Which of the following is a characteristic unique to the ciliates?

Both (a) and (b)
Possess a light-detecting eye spot
Presence of both a macronucleus and several micronuclei
Use of cilia as a sensory function

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Micro Organisms
Eukaryotic cell organelles first emerged

from a specialized lineage of cells within the kingdom Protista
when prokaryotes engulfed each other and became interdependent
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-acetyltalosaminuronic acid and L-amino acids
N-acetyltalosaminuronic acid and D-amino acids
N-acetylmuramic acid and D-amino acids
N-acetylmuramic acid and L-amino acids

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