| A | B |
| Bacteriostatic agents | Drugs which inhibit the growth of bacteria. |
| Bactericidal agents | Drugs which kill bacteria |
| Natural resistance | Bacterial resistance which occurs without previous exposure to an antibacterial drug. |
| Acquired resistance | Bacterial resistance which is caused by prior exposure to an antibacterial. |
| Cross resistance | Bacterial resistance which occurs between antibacterial drugs that have similar actions. |
| Culture | Lab test used to determine the cause of an infection. |
| Sensitivity | Lab test used to determine the antibiotics effective against an organism. |
| Narrow spectrum of action | Drugs which are effective against one type of organism. |
| Broad spectrum of action | Drugs which are effective against both gram + and gram - organisms. |
| Rash, hives | S/S of allergic reaction to a drug. |
| Bronchospasm, vascular collapse | S/S of an anaphylactic reaction. |
| Superinfection | Adverse reaction caused by overuse of antibiotics. |
| Drug Resistance | Bacteria continues to grow despite the administration of an antibacterial drug. |
| Organ toxicity | Adverse reaction to antibacterial drugs causing damage to organs. |