Micro Organisms
Mycoplasmas are different from the other prokaryotes by

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

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

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