Virus Generalities Flashcards
ALL DNA viruses are icosahedral EXCEPT
Poxvirus
Most RNA viruses have helical symmetry EXCEPT
Flaviviruses Caliciviruses Reoviruses Picornaviruses Togaviruses Hepevirus
All enveloped viruses acquire their envelope from plasma membrane EXCEPT
Herpes virus (nuclear membrane)
NAKED DNA VIRUS
Papillomavirus
Adenovirus
Parvovirus
Polyomavirus
NAKED RNA VIRUS
Calicivirus
Picornavirus
Reovirus
Hepevirus
All viruses are haploid except
Retrovirus
RNA viruses have segmented genome
BOAR
Bunyavirus (3 segments)
Orthomyxovirus (8 segments)
Arenavirus (2 segments)
Reovirus (10 segments)
Only viruses with double stranded RNA genome
Reoviridae
Negative Strand RNA viruses
Always Bring Polymerase Or Fail Replication
Arenavirus Bunyavirus Paramyxovirus Orthomyxovirus Filovirus Rhabdovirus
Most DNA viruses have both a negative and positive strand EXCEPT
Parvovirus (single stranded DNA genome)
All double stranded DNA have icosahedral symmetry EXCEPT
Poxvirus (DNA has complex structural proteins)
EXCHANGE of genes between 2 chromosomes by crossing over within base sequence homology
Recombination
SEGMENTED viruses exchange genetic material
Reassortment
Functional + NONfunctional = Functional
Complementation
NO GENE EXCHANGE
Simultaneous infection with 2 viruses
Phenotypic Mixing
LIVE VACCINES
MMR Japanese Encephalitis Oral Polio Varicella Intranasal Influenza Typhoid fever BGC Smallpox
DNA Viruses
HHAPPPPy viruses
Hepadnavirus Herpesvirus Adenovirus Poxvirus Parvovirus Polyomavirus Papillomavirus
All DNA viruses have double stranded DNA EXCEPT
Parvovirus
All DNA viruses have linear DNA EXCEPT
Papilloma
Polyoma
Hepadna
All DNA viruses are icosahedral EXCEPT
Poxvirus
All DNA viruses replicate in the nucleus EXCEPT
Poxvirus
All RNA viruses have single stranded RNA EXCEPT
Reovirus and Rotavirus
All RNA viruses replicate in the CYTOPLASM EXCEPT
Influenza and Retrovirus
PICORNAVIRIDAE
PERCHed on a PIC
Poliovirus Echovirus Rhinovirus Coxsackievirus Hepatitis A virus
