| Term | Definition |
| Binary Fission | A type of reproduction that bacteria do. It consists of one parent and a process called asexual reproduction. It is when one parent produces offspring by a cell duplicating and then divides into two separate cells. The result of the process is that each new cell gets its own complete copy of the parents cells genetic material as well as some of the parents ribosomes and cytoplasm. |
| Conjugation | A type of reproduction that bacteria do. It consists of two parents. What happens is two parents combine their genetic material to produce a new organism which DIFFERS from both parent. The result of the process is a bacteria with new combinations of genetic material. |
| Flagella or Flagellum | A part of a bacterium that helps it move throughout a moist environment. Not all bacteria have it. |
| Saprophytes | Any organism that uses dead material as a food and energy source. |
| Pathogen | Any organism that produces disease. |
| Antibiotic | a substance produced by an organism that is used to kill or inhabit another organism. |
| toxin | a poison produced by disease causing organisms. |
| endospore | a thick walled structure that some bacteria produce around themselves, especially for protection from heat and drought. |
| Coccus | Spherical |
| Bacillus | Rod Shaped |
| Spiral Shaped | Spirilla |