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20 Cards in this Set
- Front
- Back
In practical terms in everyday use, which of the following statements provides the definition of sterilization? a |
a. Sterilization eliminates organisms and their spores or endospores/ b. Sterilization eliminates harmful microorganism and viruses. c. Sterilization eliminates prions. d. Sterilization eliminates hyperthermophiles. |
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Which of the following substances or processes kills microorganisms on labortory surfaces? a. antiseptics b. disinfectants c. degermers d. pasteurization |
b |
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Which of the following terms best describes the disinfecting of cafeteria plates? a. Pasteurization b. antisepsis c. sterilization d. sanitization |
d |
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The microbial death rate is used to measure____. a. the efficiency of a detergent b. the efficiency of an antiseptic c. the efficiency of sanitization techniques d. all of the above |
d |
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Which of the following statements is true concerning the selection of an antimicrobial agent? d |
a. An ideal antimicrobial agent is stable during storage. b. An ideal antimicrobial agent is fast acting c. Ideal microbial agents do not exist d. all of the above |
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The endospores of which organism are used as a biological indicator of sterilization? a. Bacillus stearothermophilus b. Salmonella enterica c. Mycobacterium tuberrculosis d. Staphylococcus aureus |
a |
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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? d |
a. disk-diffusion test b. phenol coefficient c. filter paper test d. in-use test |
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Which of the following items functions most like an autoclave? a. boiling pan b. an incinerator c. a microwave oven d. a pressure cooker. |
d |
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The preservation of beef jerky from microbial growth relies on which method of microbial control? a. filtration b. lyophilization c. desiccation d. radiation |
c |
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Which of the following types of radiation is more widely used as an antimicrobial technique? a. electron beams b. visible light waves c. radio waves d. microwaves |
a |
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Which of the following substances would most effectively inhibit anaerobes? a. phenol b. silver c. ethanol d. hydrogen peroxide |
d |
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Which of the following adjectives best describes a surgical procedure that is free of microbial contaminants? d |
a. disinfected b. sanitized c. degermed d. aseptic |
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Biosafety Level 3 includes _____. a. double sets of entry doors b. pressurized suits c. showers in entryway d. all of the above |
a |
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A sample of E.coli has been subjected to heat for a specified time, and 90% of the cells have been destroyed. Which of the following terms best describes this event? c |
a. thermal death point b. thermal death time c. decimal reduction time d. none of the above |
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Which of the following substances is least toxic to humans? a. carbolic acid b. glutaraldehyde c. hydrogen peroxide d. formalin |
c |
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Which of the following chemicals is active against bacterial endospores? a. copper ions b. ethylene oxide c. ethanol d. triclosan |
b |
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Which of the following disinfectants acts against cell membrance? a. Phenol b. peracetic acid c. silver nitrate d. glutaraldehyde |
a |
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Which of the following disinfectants contains alcohol? a. an idophor b. a quat c. formalin d. a tincture of bromine |
d |
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Which antimicrobial chemical has been used to sterilize spacecraft? a. phenol b. alcohol c. heavy metal d. ethylene oxide |
d |
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Which class of surfactant is most soluble in water? a. quaternary ammonium compounds b. alcohols c. soaps d. peracetic acids |
a |