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7 Cards in this Set
- Front
- Back
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What does it mean when a virus is a (+) stranded RNA virus?
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The RNA is just like mRNA - can immediately be translated by host ribosomes
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What enzyme must (-) stranded RNA viruses carry in their capsid?
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RNA-dependent RNA polymerase
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What is a retrovirus?
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Carries RNA, which is reverse transcribed into DNA by viral reverse transcriptase
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List the DNA viruses?
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(HHAPPPy): Parvoviridae, hepadnaviridae, papovaviridae, adenoviridae, herpesviridae, poxviridae
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List the RNA viruses?
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Picornaviridae, Caliciviridae, Reoviridae, Togaviridae, Coronaviridae, Orthomyxoviridae, Rhabdoviridae, Paramyxoviridae, Retroviridae
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What are the 4 steps necessary for viral reproduction?
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1. Adsorption/penetration
2. Uncoating of the virus 3. Synthesis and assembly of viral products 4. Release of virions from the host cell |
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What are the four possible host cell outcomes of viral infection?
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1. Death
2. Transformation - infection can activate oncogenes 3. Latent infection - virus exists in sleeping state that can be reactivated 4. Chronic slow infection - with disease caused only after many years of indolent infection |
