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Cards In This Set
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Viruses
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Unique group of infectious agents who are acellular
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Viron
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Complete virus particle that consists of DNA or RNA enclosed in a coat of protein
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Nucleocapsid
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Composed of a nucleic acid held within a protein coat called the capsid
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Protomers
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Proteins that form the capsid
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Envelope
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Lipid layer external to the nucleocapsid
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Helical capsids
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Shaped like hollow tubes with protein walls
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Icosahedral capsid
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Regular polyhedron with 20 triangular faces and 12 vertices
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Capsomers
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Ring or knob shaped units composed of 5 or 6 protomers that form the icosahedral capsids
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Binal symmetry
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Head that resembles an icosahedron and a tail that is helical
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Spikes or peplomers
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Viral encoded proteins that project from the cell membrane
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Neuraminidase
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Enzyme located in some spikes that functions in the release of mature virions from the host cell
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Hemagglutinin
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Type of spike protein that binds virions to red blood cells and causes the cells to clump together or binds them to host cells
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Virulent phage
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Phage that can only begin multiplying immediately followed by lysis of the host cell
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Temperate phage
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Can either multiply like virulent phages and lyse the host cell or remain in the host cell without destroying it
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Lysogeny
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Relationship between a temperate phage and its host
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