| A | B |
|---|
| bacilli | rod-shaped bacteria, are the most common |
| cocci | spherical-shaped bacteria |
| spirilla | spiral-shaped bacteria |
| streptococci | spherical bacteria in chains |
| staphylococci | spherical bacteria in clusters |
| Gram-positive | purple colored bacteria (after stain) |
| Gram-negative | pink colored bacteria (after stain) |
| antibiotics | chemical substances that kill bacteria |
| endospore | a structure produced by some bacilli bacteria to survive adverse conditions |
| obligate anaerobes | bacteria that die in the presence of oxygen |
| facultative anaerobes | bacteria that can live with or without oxygen |
| obligate aerobes | bacteria that will die without oxygen |
| conjugation | bacteria of different genotypes share genetic information |
| prokaryote | organisms without a nucleus & membrane bound organelles |
| antibiotic resistance | evolution of super bacteria immune to antibiotic poisons |
| virus | a nonliving infective particle of nucleic acid and protein |
| capsid | the protein covering of a virus |
| lytic cycle | viruses attack and destoy cells |
| lysogenic cycle | viruses attack cells but the viral DNA becomes part of the cell |
| prophage | the segment of viral DNA that attaches to host cell DNA |
