Across
- 6. A virus that parasitizes a bacterial cell.
- 10. A protein substance or substances produced by cells exposed to viruses; acts to slow the spread of a virus.
- 11. An abnormal form of protein found in some cells and linked to disease.
- 12. A submicroscopic, noncellular particle, composed of a nucleic acid core and a protein coat called the capsid; an obligate parasite.
Down
- 1. A viral illness that originated in animals but has been transferred and spread by humans (2 words).
- 2. The process in which a virus remains latent in cells but spreads by becoming part of the host cell genome (2 words).
- 3. A method of exposing a person to a controlled amount of a disease-causing factor to develop an immunity.
- 4. A membrane-like structure that forms an outer covering on some kinds of viruses.
- 5. The sequence of events whereby a virus replicates within a cell and eventually destroys the cell (2 words).
- 7. A special type of RNA virus that contains the enzyme reverse transcriptase.
- 8. A short, single strand of circular RNA that has no capsid or envelope yet is still able to replicate once inside a host.
- 9. The outer covering of a virus; made from protein.