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Definition
| AN infectious particle incapable of replicating outside of a cell, consisting of an RNA or DNA genome surround by a protein coat [capsid] and, for some viruses, a membranous envelope |
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Definition
| The protein shell that encloses a viral genome; it may be rod-shaped, polyhedral, or more complex in shape |
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| A membrane derived from membranes of the host cell that cloaks the capsid, which in turn encloses a viral genome |
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Definition
| A type of phage replicative cycle resulting in the release of new phasges of the lysis (and death) of the host cell |
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Definition
| A phage that replicates only a lytic cycle |
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Definition
| An endonuclease [type of enzyme] that recognizes and cuts DNA molecules foreign to a bacterium (such as phage genomes). The enzymes cut a specific nucleotide sequences [restriction sites] |
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Definition
| A type of phage replicative cycle in which the viral genome becomes incorporated intto the bacterial host chromosome as a prophage, is replicated along with the chromosome, and does not kill the host |
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Definition
| A phage genome that has been inserted into the 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; an important class of cancer-causing viruses |
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Definition
| An enzyme encoded by certain viruses (retroviruses) that uses RNA as a template for DNA synthesis |
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| Human Immunodeficiency Virus [HIV] |
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Definition
| The infectious agent that causes AIDS; HIV is a retorvirus |
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| Acquired Immmunodeficiency Syndrome [AIDS] |
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Definition
| The symptoms and signs present during the late stages of HIV infection, defined by a specified reduction in the number of T cells and the appearance of characteristic secondary infections |
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Definition
| A viral genome that is permanently inserted into a host genome |
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Definition
| A harmless variant derivative of pathogen that stimulates a host's immune system to mount defenses against the pathogen |
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Definition
| A general outbreak of a disease |
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| A plant pathogen consisting of a molecule consisting of naked, circular RNA a few hundred nucleotides long |
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Definition
| An infectious agent that is a misfolded version of a normal cellular protein, Prions appear to increase in number by converting a correctly folded version of the protein to more prions |
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