Viruses Flashcards
Virion
The infectious particle of a virus
How many types of nucleic acid do viruses have
One
What are the two minimal structural components of a virus?
A protein coat surrounding nucleic acid
What are the criteria used to classify a virus?
Virion morphology (enveloped or nonenveloped)
Type of nucleic acid
(+) or (-) sense
Virus strain
A virus with any genetic change
Virus serotype
A virus strain with an antigenic change that results in a different antibody response
Virus biotype
A strain with different biological properties (ex. More virulent or able to replicate in different host species)
Morphological classification of Parvoviridae
Single stranded DNA
Nonenveloped
Morphological classification of Poxviridae
Double stranded DNA
Enveloped
Morphological classification of Hepadnaviruses
Single and double stranded DNA
Nonenveloped
Coronavirus morphology/genomic sense classification
Single stranded RNA
Message (+) sense
Enveloped
Togavirus morphology/genomic sense classification
Single stranded RNA
Message (+) sense
Enveloped
Flavivirus morphology/genomic sense classification
Single stranded RNA
Message (+) sense
Enveloped
Morphological classification of Herpesviridae
Double stranded DNA
Enveloped
Picornaviruses morphology/sense classification
Single stranded RNA
(+) sense
Nonenveloped
Calicivirus morphology/sense classification
Single stranded RNA
(+) sense
Nonenveloped
Rhabdovirus and paramyxovirus virus classification
Single strands RNA
(-) sense
Enveloped
Orthomyxovirus classification
Single stranded RNA
(-) sense
Arenavirus classification
Single stranded
Mixed sense
Reovirus and Birnaviruses classification
Double stranded segmented RNA
Retrovirus morphological/sense classification
RNA genome
(+) sense
***Makes double stranded DNA once in cell
