| A | B |
|---|
| capsid | viral protein coat |
| genome | entire viral genetic material |
| Envelope | viral coating obtained from host membrane |
| spike | used for attachment to host cells |
| nucleic acid | can be DNA or RNA |
| phage | virus that infects bacteria |
| prion | an infectious proteinaceous particle |
| lytic cycle | when viruses invade, and burst host cells |
| lysogenic cycle | when viruses invade, incorporate their DNA, and wait |
| Helper T-Cell | white blood cell infected by the HIV virus |
