| A | B |
|---|
| Aerobe | Organisms that must have oxygen to survive |
| Anaerobe | Organisms that can survive without oxygen |
| Endospore | Heat-resistant structure in bacteria |
| Fission | Produces to cells with genetic material exactly like the parent cell |
| Flagellum | Structure by which some organisms move |
| Nitrogen-fixing bacteria | Bacteria in roots that makes nitrogen available to organisms |
| Pathogen | Any organism that produces disease |
| Saprophyte | Organism that decomposes dead organisms |
| Toxin | Harmful chemical produced by some pathogens |
| Vaccine | Substance that can prevent, not cure, a disease |
