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Define Domain
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The highest level in classification above kingdom
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Define Eukaryote
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Organism composed of one or more eukaryotic cells; members of the domain Eucarya are Eukaryotes
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Define Eukaryotic Cell
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Cell type characterized by a membrane-bound nucleus
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Define Obligate Intercellular Parasite
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An organism or virus that multiplies only inside living cells
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Define Prion
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A non-living infectious agent consisting only of protein
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Define Prokaryote
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Single-celled organism consisting of a prokaryotic cell; members of the domains Bacteria and Archaea are prokaryotes
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Define Prokaryotic Cell
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Cell type characterized by the lack of a membrane-bound nucleus
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Define Viroid
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A non-living infectious agent consisting of nucleic acid surrounded by a protein coat
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Define sponaneous generation
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The belief that worms and other forms of life arise from non-living material
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