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Virus- miniscule, acellular, infectious agents having DNA or RNA |
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Characteristics of viruses |
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cannot carry out any metabolic pathway neither grow nor respond to the environment cannot reproduce independently uses the host cell to replicate No cytoplasmic membrane no cytosol no organelles has extracellular and intracellular state |
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neucleocapsid - nucleic acid and capsid |
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virion contains - capsid, nucleic acid, some have phospholipid envelopes, outer layer provides protection and recognition sites for host cells |
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capsid is removed, nucleic acid is released into host cell |
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Viral nucleic acids may be |
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