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Ap Biology Chapter 19 Flashcards

Terms : Hide Images
6152043007CapsidThe protein shell that encloses the viral genome0
6152045122Viral envelopesMembranes that surround the capsids of some viruses and are derived from the host's cell membranes1
6152060560BacteriophagesViruses that infect bacteria2
6152065667Host rangeA limited number of host cells that a virus can infect3
6152069886Lytic cycleA phage reproductive cycle that culminates in the death of the host cell4
6152076239Virulent phageA phage that reproduces only by the lytic cycle5
6152086605Lysogenic cycleA phage cycle that replicates the phage genome without destroying the host6
6152093391ProphageThe DNA that is from a virus that is integrated into the host bacteria7
6152147366Temperate phagesPhages that use both the lytic and lysogenic cycles8
6152153812RetrovirusesViruses that use reverse transcriptase to copy their RNA genome into DNA9
6152166408ProvirusThe viral DNA that is integrated into the host genome10
6152172290VaccinesHarmless derivatives of pathogenic microbes that stimulate the immune system to mount defenses against the actual pathogen11
6152284831ViroidsCircular RNA molecules that infect plants and disrupt their growth12
6152288590PrionsSlow-acting, virtually indestructible infectious proteins that cause brain diseases in mammals13

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