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Ch. 6 - Coggle Diagram
Ch. 6
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Morphology
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Polyhedral: Icosahedral structure (Poliovirus, Adenovirus)
Helical: Rod-like (Ebola, Rabies)
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Viral structure
Genetic material: +ssRNA (Picornaviridae), ssDNA (Parvoviridae), dsDNA (Herpesviridae), -ssRNA (Filoviridae (Ebola)), dsRNA (Reoviridae)
Envelope (if present): Derived from host membrane, Viral proteins
Spikes: Attachment to host cells, ID viruses
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Latent + Retroviruses
Latent: Virus is dormant in host, activated by stress (Herpes, Varicella-Zoster (shingles))
Retroviruses (HIV): Reverse transcriptase, converts RNA to DNA, Integrate into host genome as provirus
Lytic vs. Lysogenic
Lytic: T4 phage, ends death of host cell
Lysogenic: Lambda phage, host cell remains alive
Viruses: Intracellular parasites, Pass through 0.2µ filters, Contain RNA or DNA, Protein coat (capsid)
(some enveloples), Host-specific infection