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12 Cards in this Set
- Front
- Back
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What enzyme does -ssRNA need to make it +ssRNA? |
Polymerase |
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Viruses lack their own ________ and _______ for ________ and _________ synthesis |
Ribosomes, enzymes, protein, nuc. acid |
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What does the virus hijack in the cell in order to express early, middle, and late genes? |
Cell’s transcription and translation machinery. |
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How is the retrovirus different from the above viruses? |
Have RNA genome that is reverse transcribed into DNA by reverse transcriptase (an ezyme). |
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Prophage |
Viral integrated genome, temperate/lysogenic phage |
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Lysogen |
Cell with a prophage |
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What's an example of phage conversion? |
Vibrio cholerae |
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Persistent vs acute viral infections are categorized based on: |
Acute: How rapid/frequent virus is produced Persistent: Appearance of associated symptoms |
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How do the subtypes differ? |
Protein spikes (hemagglutinin and neuraminidase) |
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Antigenic shift |
A mixing of two different viruses. |
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Antigenic drift |
Accumulation of small mutations in a single virus strain. |
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Viroids |
Naked molecs of circular RNA that can cause disease in crops. Interfere w plant growth. |
