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U3L07 Viruses
AP Biology - Viruses
| Question | Answer |
|---|---|
| The protein shell that encloses a viral genome. It may be rod-shaped, polyhedral, or more complex in shape. | capsid |
| A virus that infects bacteria; also called a phage. | bacteriophages |
| The limited number of species whose cells can be infected by a particular virus. | host range |
| A phage that replicates only by a lytic cycle. | virulent phage |
| A type of phage replicative 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. | lysogenic cycle |
| A phage genome that has been inserted into a specific site on a bacterial chromosome. | prophage |
| An enzyme encoded by certain viruses (retroviruses) that uses RNA as a template for DNA synthesis. | reverse transcriptase |
| A viral genome that is permanently inserted into a host genome. | provirus |
| A harmless variant or derivative of a pathogen that stimulates a host's immune system to mount defenses against the pathogen. | vaccine |
| A global epidemic. | pandemic |
| An infectious agent that is a misfolded version of a normal cellular protein. Prions appear to increase in number by converting correctly folded versions of the protein to more prions. | prion |
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