| Term | Definition |
| asexual reproduction | involes only one parent |
| sexual reproduction | involes two parents |
| endospore | small round resting cell that forms inside a bacterial cell |
| binomial nomenclature | naming system for organisms |
| taxonomy | scientific study of how living things are classified |
| species | group of similar organism |
| genus | classification grouping consists of a number of similar closely related species |
| taxonomic key | series of paired statements; describe physical characteristica of organism |
| is a virus considered living or nonliving | nonliving |
| last one on the taxonomic key | species |
| bacteriophage | a virus that infects bateria |
| classification | process of grouping things based on their similarities |