| A | B |
|---|
| obligate anaerobe | prokaryote that cannot survive in the presence of oxygen |
| obligate aerobe | prokaryote that cannot survive without the presence of oxygen |
| facultative aerobe | organism that can live with or without oxygen |
| plasmid | circular piece or genetic material found in bacteria that can replicate separately from the DNA of the main chromosome |
| flagellum | whiplike structure outside of a cell that is used for movement (plural: flagella) |
| conjugation | process by which a prokaryote transfers part of its chromosome to another prokaryote |
| endospore | prokaryotic cell with a thick, protective wall surrounding its DNA |
