| A | B |
| Virus (poison) | Name assigned to the small nano particle sized infective agent. |
| Bacrteriaphage | A virus that attacks bacteria. |
| virulence | Infective ability of a virus once it infects a cell. |
| Lytic Cycle | The initial active cycle of a virus once it infects a cell. |
| Lysogenic Cycle | The inactive phase some viruses exhibit until stimulated by a stressor. |
| Persistent viral infection | The host cell doesn't go through lysis but slowly continues to release virus particles. |
| Transforming viruses | Viruses that add their genetic information to a cell's DNA which transforms the original cells, as it is seen in warts. |
| Capsid | Protein coat of the viruse encapsulating the nucleic material of RNA or DNA. |
| Nucleic Acid | The information portion of any cell or virus in the form of DNA or RNA. |