BIO 1030 Lecture Notes - Lecture 35: Reverse Transcriptase, Cell Membrane, Causative
17 Apr 2017
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Document Summary
Lytic cycle: viruses takes over immediately, bacteria dies immediately after virus release, 5 stages. Virus has to attach to the surface of the cell. Virus has to release its genetic material into the cell. Cell will produce copies of the viral genes and proteins. Animal viruses: reproduce similar to bacteriophages, some but not all will have an outer membranous envelope beyond the capsid. Made from host cell plasma membrane: retroviruses. Reverse transcriptase make dna from rna template. Emerging viruses: causative agent of a disease that only recently has infected large numbers of people, emerge in several ways. New mode of transmission: drug control of human viral diseases. Difficult to develop- uses cell"s own machinery. Some drugs structurally similar to nucleotides to interfere in viral genome synthesis. Viroids: naked strands of rna not covered by capsid, like virus takes over cell to make more viroids, about a dozen crop diseases.
