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10 Cards in this Set
- Front
- Back
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viruses characteristics
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infectious particle,always contains
DNA or RNA but not both; a protein coat - capsid; technically not alive |
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virion
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a complete, full developed, infectious viral particle;
vehicle of transmission;20 to 1000 nm in length |
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viral nucleic acid
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Seven classes of viruses are based on the nature of their nucleic acid;may be either DNA or RNA, but never both;may be double stranded or single stranded
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capsid
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in some cases, the capsid is covered by an envelop
usually derived from the host cell membrane;spikes are viral carbohydrate-protein (i.e. glycoproteins) complexes that stick out from the surface of the envelope |
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spikes
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ability of certain viruses (such as Influenzavirus) to clump red blood cells;hemagglutination - basis of useful laboratory tests
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Some virusus
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can mutate before immune system can respond
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Ebola
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is an enveloped helical virus
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Variola virus;
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cytopathic effect (CPE)
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disruption or deterioration of the cells; use for cell cultures
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types of cell lines are?
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primary cell lines=derived from tissue slices
diploid cell lines=from human embryos continuous cell lines=immortal cell lines;from cancerous cells - transformed cells;HeLa cells from Henrietta Lacks’ cervical cancer |
