| A | B |
|---|
| prokaryote | singe celled organism that has no nucleus |
| bacteria | prokaryote |
| bacillus | rod-shaped prokaryote |
| coccus | spherical prokaryote |
| spirillum | corkscrew shaped prokaryotes |
| chemoheterotroph | get energy from organic "food" |
| photoheterotroph | get energy from light |
| chemoautotroph | get energy from chemical reactions |
| obligate aerobe | require constant supply of oxygen |
| obligate anaerobe | must live without contact with oxygen |
| facultative anaerobe | can live with or without oxygen |
| binary fission | bacteria replicates DNA and divides in half |
| conjugation | bacteria join and share genetic info |
| endospore | allows bacteria to survive harsh conditions |
| nitrogen fixation | converting nitrogen gas into form plants can use |
