OpenStax Microbiology Test Bank- Chapter 13: Control of Microbial Growth

OpenStax Microbiology Test Bank- Chapter 13: Control of Microbial Growth BIOLOGY 206 * = Correct answer Multiple Choice 1. Which of the following is not an example of a fomite? A. catheter B. doorknob C. mosquitoes* D. towels Difficulty: Easy ASM Standard: 13, 14, 23 2. HEPA filters are required for which Biological Safety Level (BSL)? A. BSL 1 B. BSL 2 C. BSL 3 D. BSL 4* Difficulty: Easy ASM Standard: 14, 37 3. From a clinical perspective, aseptic technique is carried out to do which of the following? A. clean fomites B. contaminate fomites C. introduce contamination in living tissue D. prevent contamination in living tissue* Difficulty: Easy ASM Standard: 36, 37 4. The autoclave uses which of the following mechanism(s) for sterilization? A. pressure B. temperature C. pressure and temperature* D. pressure, temperature, and pH Difficulty: Easy ASM Standard: 14, 36, 37 5. Autoclaves are designed to kill which of the following heat-resistant microbes? A. endospores* B. prions C. vegetative bacterial and fungal cells D. viruses Difficulty: Easy ASM Standard: 14, 36, 37 6. The decimal reduction time (D-value) is how long it takes to kill which percentage of a microbial population? A. 10% B. 50% C. 90%* D. 100% Difficulty: Moderate ASM Standard: 14 7. Which of the following actions would be most clearly considered bacteriostatic rather than bactericidal? A. autoclaving bacterial cultures B. placing a bacterial culture in the −80 C freezer* C. spraying 70% alcohol on a laboratory bench D. treating a mattress with ethylene oxide Difficulty: Moderate ASM Standard: 14 8. Microbial death follows which type of trend? A. linear B. logarithmic* C. power series D. variable Difficulty: Moderate ASM Standard: 14 9. Which of the following are the standard conditions for an autoclave? A. 100 C, 1 psi, 60 minutes B. 121 C, 1 psi, 60 minutes C. 121 C, 15 psi, 20 minutes* D. 212 C, 15 psi, 10 minutes Difficulty: Moderate ASM Standard: 14, 36, 37 10. Which of the following is not a milkborne pathogen? A. Escherichia coli O157:H7 B. Listeria monocytogenes C. Salmonella enterica D. Yersinia pestis* Difficulty: Moderate