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7 Cards in this Set
- Front
- Back
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All DNA viruses =
_____ stranded replicate in the _________ nonenveloped DNA viruses typically have what shaped capsid? |
All DNA viruses are
double stranded - exept parvo (smallest) replicate the nucleus (except Pox = largest) nonenvelped DNA viruses have icosahedral capsid |
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Mnemonic for remembering DNA viruses:
special traits |
Pardon PaPa As He Has Pox (7)
from smallest to largest parvo (ssDNA) papilloma polyoma adeno hepadna herpes Pox (replicates in cytoplasm) remember all dna viruses are double stranded, replicate in the nucleus and only the first four (parvo, papilloma, polyoma, adeno) are noneveloped with an icosahedral capsid |
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All RNA Viruses are single stranded except for ______
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reovirus = linear dsRNA
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Nonenveloped vs Enveloped Viruses
compare components of outer layer? sensitivity to head/acid/detergent/drying? transmission? survival in GI? host immune response? function? |
Nonenveloped viruses:
-proteins = outer layer = capsid -resistant to heat/acid/drying, etc and thus survives the GI tract -Ab response -transmission = fomits, dust, fecal-oral -capsid components recognize and bind cell surface receptors of host Enveloped viruses -components = glycoproteins, phospholipids, prot from host cell membrane -sensitive to heat, acid/detergents, etc so don't survive GI -host response is Ab and cell mediated immune response -viral envelope glycoproteins function in virion entrace inyto host (attachment, fusion proteins, enzymes like neuraminidase) |
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Mnemonic for remembering + RNA viruses
special traits |
Call Hey to Pico and Fay To Come Rightaway
Calci Hepe Picorna Flavi Toga Corona Retro All + RNA are single stranded (reovirus - not here is dsRNA) All replicate in the cytoplasm except Retrovirus All are linear and nonsegmented - REO virus is segmented All are enveloped except first three (calci, hepe, Picorna) |
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Mnemonic for remembering (-) RNA viruses
special traits |
Pain Results From Our Bunions Always (pain is negative)
Paramyxo Rhabdo (bullet) Filo Orthomyxo (cytoplasm + nuc) Bunya Arena All are enveloped, helical (except Rhabdo), have polymerase and replicate in the cytoplasm (except orthomyxo - replicates in both cyoplasm and nucleus) |
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Mnemonic for naked RNA viruses
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Help CPR!!
Hepe (dsRNA) Calci Picorna Reo all + RNA viruses |
