| A | B |
|---|
| vaccine | can be used to prevent some bacterial diseases |
| flagella | whiplike tail that helps bacteria move |
| aerobe | an organism that uses oxygen for respiration |
| anerobe | an organism that lives without oxygen |
| saphrophyte | any organism that uses dead material as a food and energy source |
| nitrogen-fixing bacteria | type of bacteria in plant roots that benefit the plant |
| pathogen | any organism that can cause disease |
| antibiotic | substance used to kill bacteria |
| toxin | poison produced by pathogens |
| endospore | heat-resistant structure in bacteria |
| cocci | sphere-shaped bacteria |
| fission | asexual form of bacterial reproduction |
| bacilli | rod-shaped bacteria |
| nodules | growths on roots of plants where beneficial bacteria live |
| colonies | globular groups in which many cyanobacteria live |
| spirilla | spiral-shaped bacteria |
| disease | a sickness, such as strep throat or tetanus |
| pasteurization | process of heating food to kill harmful bacteria |
| penicillin | well-known antibiotic prevents bacteria from making cell walls |
| methane | a gas produced as a waste product by certain bacteria |
