Chapter 19

3. integration of the bacteriophage nucleic acid into the host bacterium's genome or formation of a circular replicon in the bacterium's cytoplasm
5. a biological preparation that improves immunity to a particular disease
6. an RNA virus that replicates in a host cell through the process of reverse transcription
8. a widespread occurrence of an infectious disease in a community at a particular time.
9. outbreak of a disease over a whole country or world
11. an enzyme used to generate complementary DNA (cDNA) from an RNA template
14. A host cell is a living cell in which a virus reproduces

1. an infectious entity affecting plants, smaller than a virus and consisting only of nucleic acid without a protein coat.
2. cuts DNA at or near specific recognition nucleotide sequences
4. results in the destruction of the infected cell and its membrane
7. The outer structure that encloses the nucleocapsids of some viruses
10. A virus capable of infecting and lysing bacterial cells. Also called phage
12. a small infectious particle composed of abnormally folded protein that causes progressive neurodegenerative conditions.
13. the coiled or polyhedral structure, composed of proteins, that encloses the nucleic acid of a virus