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14 Cards in this Set
- Front
- Back
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What is a Capsomer?
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Individual units of a capsid (identical protein subunits that construct the capsid of a virus)
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What is a Naked Virus?
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a non-enveloped virus (viruses that consist only of a nucleocapsid)
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What is a nucleocapsid?
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term used to refer to the capsid and nucleid acid
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What is a bacteriophage?
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a virus that attacks bacteria
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What is tropism?
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the range of hosts that a virus can infect (term used to describe viruses that have an affinity to specific tissues)
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What does cytopathic mean?
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virus induced damage to the cell (the degenerative changes in cells associated with virus infection, alters microscopic appearance)
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What is a persistent infection?
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An infection that isn't cleared by the immune system (when a virus is harbored by a host cell, may last for a few weeks to several years)
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What is a latent infection?
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An infection where a virus is not actively producing new viral particles (when a virus is inactive for long periods of time)
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What is an oncovirus?
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a virus that causes cancer (A mammalian virus capable of initiating tumors)
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What is induction?
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transition of a bacteriophage from lysogenic to the lytic cycle
(A process in which the prophage in a lysogenic cell will be activated and progress directly into viral replication and the lytic cycle) |
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What does prion mean?
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new kind of infectious particle
- prion diseases are transmitted by ingesting prion protein because prions do not have cell membranes, capsids, DNA or RNA - e. g. Mad cow disease & kuru disease |
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What is a viroid?
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an infectious agent that, unlike a virion, lacks a capsid and consists of a closed circular RNA molecule. all known viroids are plant pathogens
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What is a plaque?
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the clear zone of lysed cells in tissue culture or chick embryo membrane that corresponds to the area containing viruses
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What is an acute infection?
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an infection that is cleared by the immune system (infection that comes on quickly, with severe but short-lived effects)
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