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An infectious particle incaple of replicationg outside of a cell
Consists of an RNA or DNA genome surrounded by a protein coat and, for some viruses, a membranous envelope |
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The protein shell that encloses a viral genome
May be rod-shaped, polyhedral, or more complex in shape |
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| A membrame, derived from membrances of the host cell, that clokes the capsid, which in turn envelopes a viral genome |
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| A virus that infects bacteria |
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| The limited number of species whose cells can be infected by a specific virus |
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| A type of phage replication cycle resulting in the release of new phages by lysis of the host cell |
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| A phage that replicates only by the lytic cycle |
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An endonuclease that recognizes and cuts DNA molecules foreigh to a bacteria
Cuts at a specific nucleotide sequence |
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| A type of phage reproductive cycle in which the viral genome becomes incorporated into the bacterial host chromosome as a prophage, is replicated along with the chromosome, and does not kill the host |
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| A phage that us capable of replicating by either lytic or lysogenic cycle |
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| A phage genome that has been inserted into a specific site on a bacterial chromosome |
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An RNA virus that replicates by transcribing its RNA into DNA and then inserting the DNA into a cellular chromosome
Important class of cancer-causing viruses |
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| An enzyme encoded by certain viruses that uses RNA for a template of DNA synthesis |
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The infectious agent that causes AIDS
A retrovirus |
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The sympotms and signs present during the last stage of HIV infection
Difined by specified reduction in the number of T cells and the appearance of characteristic secondary infections |
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| A ciral genome that is permenantyl inserted into thr host genome |
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| A harmless variant or deritative of a pathogen that stimulates a host's immune system to mount a defense against the pathogen |
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| General outbreak of a disease |
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| A plant pathogen consisting of a molecule of naked, circular RNA a few hundred nucleotides long |
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An infectious agent that is a misfiled version of a normal cellular protein
Appear to increase in number by converting correctly folded versions of the protein to more prions |
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