Virology Flashcards
All helical viruses are
All icosahedral virus are
Enveloped
Naked
Nucleic acid genome
+ protein coat with repeating isomers
Nucleocapsid
All enveloped viruses acquire their envelope from plasma membrane except
Herpes virus
Nuclear membrane
T or F
Naked viruses are less stable and more easily inactivated
Enveloped
Naked RNA viruses
Calici
Picorna
Reo
Naked DNA viruses
Parvo
Adeno
Papilloma
Polyoma
Purified nucleic acids of
+ strand genome ssRNA viruses
dsDNA viruses EXCEPT
are infectious
Poxviruses
HBV
All viruses are haploid except
Retroviruses
Some RNA viruses have a SEGMENTED GENOME making them prone to
Genomic reassortment
Epidemics
Influenza
Segmented genome
Bunya
Orthomyxo influenza
Arena
Reo rotavirus
Negative strand RNA viruses must transcribe strand to positive so they bring their own
RNA dependent RNA polymerase
Negative Strand Viruses
Always Bring Polymerase Or Fail Replication Arena Bunya Paramyxo measles parainfluenza RSV Orthomyxo influenza Filo Rhabdo rabies
One virus produces a protein that can be used by another virus
Complementation
Hep B and D
Two different viruses infect the same cell
Phenotypic mixing
Viral Growth Curve Phases
0 entry 1 decline 2 eclipse no detection 3 rise 4 latent plateu 5 cytopathic viral amplification and cell function derangement