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Unformatted text preview: acellular (not quite a true cell) very small, only seen with electron microscope consists of a core made of only one type of nucleic acid (DNA or RNA) core surrounded by a protein coat sometimes the coat is encased by an additional layer, lipid membrane called envelope can only reproduce in a host cell using the hosts cellular machinery meaning they are parasitic and cannot survive without a host on the border between living and nonliving Multicellular animal parasites not microbe called the helminthes (helmin = worm) divided into two groups: o flatworms dorsoventrally flattened, nonsegmented o roundworms cylindrical in shape, nonsegmented are microscopic during some life stages...
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- Fall '09