front 1 in practical terms in everyday use, which of the following statements provides the definition of sterilization?
| back 1 a. eliminates organisms and their spores or endospores |
front 2 which of the following substances or processes kills microorganisms on laboratory surfaces?
| back 2 b. disinfectants |
front 3 which of the following terms best describes the disinfection of cafeteria plates?
| back 3 d. sanitization |
front 4 the microbial death rate is used to measure _____________________.
| back 4 d. all of the above |
front 5 which of the following statements are true concerning the selection of an antimicrobial agent?
| back 5 d. all of the above |
front 6 The endospores of which organism are used as a biological indicator of sterilization?
| back 6 a. Bacillus stearothermophilus |
front 7 A company that manufactures an antimicrobial cleaner for kitchen counters claims that its product is effective when used in a 50% water solution. By what means might scientists best verify this statement?
| back 7 d. in use test |
front 8 Which of the following items functions most like an autoclave?
| back 8 d. a pressure cooker |
front 9 The preservation of beef jerky from microbial growth relies on with method of microbial control?
| back 9 c. desiccation |
front 10 Which of the following types of radiation is more widely used as an antimicrobial technique?
| back 10 a. electron beams |
front 11 Which of the following substances would most effectively inhibit anaerobes?
| back 11 d. hydrogen peroxide |
front 12 Which of the following adjectives best describes a surgical procedure that is free of microbial contaminants?
| back 12 d. aseptic |
front 13 Biosafety level 3 includes ___________
| back 13 a. a double set of entry doors |
front 14 a sample of E coli has been subjected to heat for a specific time, and 90% of the cells have been destroyed. Which of the following terms best describes this event?
| back 14 c. decimal reduction time |
front 15 Which of the following substances is least toxic to humans
| back 15 c. hydrogen peroxide |
front 16 Which of the following chemicals is active against bacterial endospores?
| back 16 b. ethylene oxide |
front 17 Which of the following disinfectants acts against cell membranes?
| back 17 a. phenol |
front 18 Which of the following disinfectants contains alcohol?
| back 18 d. a tincture of bromine |
front 19 Which antimicrobial chemical has been used to sterilize spacecraft?
| back 19 d. ethylene oxide |
front 20 Which class of surfactant is most soluble in water?
| back 20 a. quaternary ammonium compounds |