Micro Organisms
Mycoplasmas are different from the other prokaryotes by

absence of cell wall itself
presence of murrain in cell walls
presence of proteins in cell walls
presence of chitin in cell walls

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Micro Organisms
Which of the following best represents the hierarchy of levels of biological classification?

Class, order, kingdom, phylum, family, genus, species
Kingdom, phylum, family, class, order, genus, species
Kingdom, phylum, class, order, family, genus, species
Phylum, kingdom, class, order, genus, species, family

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

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

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