| A | B |
| Bacteriophages | viruses that infect bacteria |
| Capsid | Genetic material surrounded by a protein shell |
| Lytic infection | results in the lysis, or breaking apart, of the host cell and release of new viral particles |
| Lysogenic infection | does not destroy the host cell |
| prophage | DNA inserted into the host cell's DNA |
| Virion | A small viral particle |
| Plasma | Clear yellowish fluid, about 90% water, that suspends cells in the blood |
| Viruses | infectious particle made only of a stand of either DNA or RNA surrounded by a protein |