MICR 290 Final Exam Q&A - West Coast University, Los Angeles

MICR 290 Final Exam Q&A - West Coast University, Los Angeles Microbiology with Diseases by Body System, 5e (Bauman) Chapter 9 Controlling Microbial Growth in the Environment 1) Washing dishes in the dishwasher with detergent and hot water is a ________ process. B) disinfecting 2) Which of the following statements is TRUE of disinfectants? D) They are used on inanimate surfaces. 3) You notice a sign in a public restroom that states "Sanitized for your safety." This means D) methods of disinfection that meet minimum standards of microbial removal have been used. 4) Which of the following is an example of pasteurization? C) Heat is used to kill potential pathogens in apple juice. 5) Aseptic means E) free of pathogens. 6) Methods of microbial control called ________ arrest the growth of microbes. B) microbistatic 7) Antimicrobial agents that damage nucleic acids also affect A E) protein synthesis. 8) A chemical agent that dissolves lipids can damage E) cells and enveloped viruses. 9) An instrument that will come into contact with only the skin of a patient should be disinfected with a(n) B) low-level germicide. 10) Which of the following is the most difficult to inactivate? C) bacterial endospores 11) Which of the following describes flash pasteurization? B) heating at 72°C for 15 seconds 12) Which of the following is bacteriostatic? B) freezing below 0°C 13) Boiling water for 10 minutes is effective in ridding it of E) both growing bacteria and enveloped viruses. 14) Which of the following is NOT a feature associated with filtration? C) varying thicknesses of membrane filters used 15) Ultra-high-temperature sterilization effectively D) removes all microbes that cause diseases or spoilage. 16) Which of the following types of radiation is nonionizing and has the shortest wavelength? A) ultraviolet light 17) Which of the following is used for microbial control in fresh fruits and vegetables? E) gamma rays 18) Which of the following can be used to reduce microbes in the air of a patient's room? D) both HEPA filters and ultraviolet light 19) Silvadene, a topical treatment for burns, contains 1% silver. What category of chemical control agent is in Silvadene? B) heavy metals 20) Which of the following is the most appropriate pairing of microbe and biosafety level? D) methicillin-resistant Staphylococcus aureus (MRSA), BSL-2 21) The use of lysozyme during the preparation of cheeses and wines is effective in reducing the numbers of C) bacteria. 22) Seventy percent alcohol is effective against A) enveloped viruses. 23) Which of the following is a sterilizing agent? C) peracetic acid 24) Quaternary ammonium compounds are disinfectants effective against E) enveloped viruses. 25) Which of the following is used to sterilize items that should not, or cannot, be exposed to heat or water? A) ethylene oxide 26) What effect do aldehydes have on microbial organisms? E) They damage proteins and DNA. 27) Disinfecting agents naturally produced by microorganisms are B) antibiotics. 28) A chemical agent that kills pathogenic microbes in general is a(n) B) germicide. 29) Which of the following is NOT a desirable characteristic of an ideal antimicrobial agent? D) It only arrests growth of vegetative cells. 30) Why are endospores used to measure the effectiveness of autoclave sterilization? C) Endospores are very hard to kill. 31) A scientist develops a new medication that is a protein compound and that must be administered by injection. Which of the following would be the most effective and safest means of preparing a sterile solution of the new medication? B) filtration 32) Which of the following procedures is currently the standard test used in the United States for evaluating the efficiency of antiseptics and disinfectants? A) use-dilution test 33) Which of the following would be used to sterilize a mattress? C) ethylene oxide 34) Disinfectants that damage membranes include E) both alcohol and phenolics. 35) Which of the following antimicrobial agents is the most toxic to humans? B) ethylene oxide 36) The process of filtration is a(n) B) sterilizing method. 37) Hydrogen peroxide is an effective D) disinfecting and sterilizing agent. 38) The process of incineration is used for A) sterilization. 39) Alcohols are used for E) both antisepsis and disinfection. 40) Quaternary ammonium compounds ("quats") are used for B) disinfection. 41) The compound ethylene oxide is used in . . . . . . .