| A | B |
| flagellum | whip like tail that helps bacteria move in a liquid environment |
| fission | asexual reproduction of bacteria |
| aerobe | organism that uses oxygen for respiration |
| anaerobe | organisms that live without oxygen |
| cyanobacteria | has chlorophyll and a blue pigment or a red, yellow, or black pigment... make their food |
| Eubacteria | Members are prokaryotic single cell organisms that live almost everywhere. |
| Archaebacteria | Members live in extreme conditions. |
| methanogens | Archaebacteria that use carbon dioxide for energy and produce methane gas. |
| halophiles | Archaebacteria that live in salty environments. |
| thermophiles | Archaebacteria that live in extremely hot areas. |
| saprophyte | organisms that use dead material as a food and energy source |
| nitrogen-fixing bacteria | change nitrogen in the air to a form that plants and animals can use |
| pathogen | organism that produces disease |
| antibiotic | substance produced by one organism that inhibits or kills another organism |
| vaccine | made form damaged particles for bacteria or killed bacteria |
| toxins | poisons produced by bacterial pathogens |
| endospores | bacteria that have thick walls to make them resistant ot heat or drying |
| antibiotic resistance | when bacteria mutate into strains that are not killed by a specific drug treatment |
| TB ( tuberculosis ) | disease caused by a bacteria that attacks the lungs |
| tetanus ( lockjaw ) | disease caused by bacteria in a wound and causes muscle spasms |