06. Viruses

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Last updated 11:10 AM on 5/30/26
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8 Terms

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What is the definition of genome?

All the genes within an organism

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What is the definition of virion

A virus that is free in the environment

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What is a virus enclosed in and why?

Enclosed in capsid to protect viral DNA / RNA

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How does a virion attach to a host cell?

By using specific sites on the capsid’s surface

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What can the capsid allow and do other than protect?

Allows virion to attach and penetrate the host cell

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Describe the structure of HIV

Has glycoprotein spikes which help attach to cell structures

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What is gp120 and gp41

120 can bind to receptors on cell membranes of cells like helper T cells whilst 41 enables fusion of virus and host’s cell membrane

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Name 2 glycoproteins HIV has

gp120 and gp41