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9 Cards in this Set
- Front
- Back
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How many types of nucleic acid do viruses contain?
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ONLY ONE! DNA OR RNA
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What is a virion?
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The complete form and structure of a virus, existing outside of host cells and having full infectivity. A virion generally consists of a nucleic acid core, various viral proteins, and in some species an external envelope.
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What is the name of the protein coat that surrounds the nucleic acid in viruses?
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A capsid
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What are the two possible symmetries of the capsid?
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Icosahedral or helical
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What are the two types of viral protein?
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Structural (e.g. capsid proteins/viral surface proteins) or non-structural (e.g. enzymes concerned with the replication cycle)
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What are the three ways viruses are classified?
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Genome (DNA or RNA)
Strategy of replication Morphology (structure) |
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What combines to form a virus?
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DNA OR RNA + protein coat (And sometimes an envelope)
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Do viruses replicate intra or extra cellular-ly?
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ALWAYS intra
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How do viruses replicate?
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A normal cell is subverted by the viruses genes
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