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15 Cards in this Set

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  • Back
Viral Structure
Smaller than Bacteria
Many Shapes- rods blocks polyhedrons
Viral Structure 2 basic parts
Outer Capsid-protein subunits
Inner Core-nucleic acid
envelope
extra layor of protections, allows to be airborn
Viral spikes
extentions of envelop for adherence
Viral reproduction
Highly specific for host cells
host cell membrane receptor
Life cycle of animal virus (6 steps)
Attachment
Entrance
Replication
Biosynthesis
Assembly
Budding
(AERBAB)
Lytic
Host cell bursts and spreads
Lysogenic
host cells remain intact
Latency
Sleeping Viral genome(dormant) within host cell
Retroviruses
Genome is RNA
Enxyme reverse transcriptase RNA to DNA
creates cDNA (copy DNA
Nucleic acid is RNA
Colds
Caused by Rhinoviruses
many forms
Flu
caused by influenza viruses
many forms, become immune to vaccine
Measles
most contagious human disease
spread by water droplets
MMR vaccine
Herpies
Chronic viral infection
tendancy for latentcy
CHickenpox, shingles, genital herpies, cold sores
Antibiotics are ___ effective against____.
NOT, VIRUSES

only fights bacteria