Pathogenic RNA Viruses.ppt

Pathogenic RNA Viruses.ppt

 

Only infective agents that store genetic information in RNA molecules
RNA viruses are categorized by:
Their genomic structure
Presence of an envelope
Size and shape of their capsid
Four types of RNA viruses
Positive single-stranded RNA (+ssRNA)
Retroviruses (+ssRNA viruses that convert their genome to DNA)
Negative single-stranded RNA (-ssRNA)
Double-stranded RNA (dsRNA)

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Characterizing and Classifying Viruses, Viroids, and Prions.ppt

Virus

 

Miniscule, acellular, infectious agent having either DNA or RNA

Causes many infections of humans, animals, plants, and bacteria

Causes most of the diseases that plague the industrialized world

 

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