Chapter 10

1. Lowest concentration of a drug that visibly prevents microbial growth
5. Ability of microorganisms to tolerate drug concentrations that would normally inhibit them
8. Virus that specifically infects bacteria and may be used to treat bacterial infections
9. Enzyme produced by bacteriophages that breaks open and kills bacteria
11. Substances produced by microorganisms that inhibit or destroy other microorganisms
13. Clear area around an antibiotic disc where bacterial growth is inhibited
14. Community of microorganisms attached to a surface that can resist antibiotic treatment
15. Antimicrobials effective against a wide variety of microbial types

2. Ratio of a drug's toxic dose to its minimum effective dose
3. Test using serially diluted antibiotics in broth to measure drug susceptibility
4. Ability of a drug to harm the infectious agent without harming the host
6. Bacterial system that can make specific cuts in DNA to deactivate resistance genes
7. Use of a drug to prevent infection in a person at risk
10. Antimicrobials effective against a limited range of microbial types
12. Test that uses antibiotic discs on agar to determine bacterial drug susceptibility