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1. Enveloped viruses use glycoproteins called to specifically bind with their host cells. splkes
capsids tail fibers capsomers 2. If you could design a drug to "hide" or block sialic acid on
respiratory cells, what stage of the life cycle of influenza would be directly impacted? Assembly
Release Adsorption Synthesis 3. Why are CD4 counts related to HIV infection? HIV can only
bind to cells with CD4 receptors. HIV needs CD4 molecules for replication. HIV destroys CD4
molecules found on T cells. 4. Virus X can infect rodents and birds, whereas Virus Y infects
humans. Which has a broader host range? Virus X Virus Y 5. Rables virus has a host range as
compared to hepatitis B virus. broad restricted narrow medium

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