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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.

Which of the following substances or processes kills microorganisms on labortory surfaces?




a. antiseptics


b. disinfectants


c. degermers


d. pasteurization

b

Which of the following terms best describes the disinfecting of cafeteria plates?




a. Pasteurization


b. antisepsis


c. sterilization


d. sanitization

d

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

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

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

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

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

The preservation of beef jerky from microbial growth relies on which method of microbial control?




a. filtration


b. lyophilization


c. desiccation


d. radiation

c

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

Which of the following substances would most effectively inhibit anaerobes?




a. phenol


b. silver


c. ethanol


d. hydrogen peroxide

d

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

Biosafety Level 3 includes _____.




a. double sets of entry doors


b. pressurized suits


c. showers in entryway


d. all of the above

a

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

Which of the following substances is least toxic to humans?




a. carbolic acid


b. glutaraldehyde


c. hydrogen peroxide


d. formalin



c

Which of the following chemicals is active against bacterial endospores?




a. copper ions


b. ethylene oxide


c. ethanol


d. triclosan

b

Which of the following disinfectants acts against cell membrance?




a. Phenol


b. peracetic acid


c. silver nitrate


d. glutaraldehyde

a

Which of the following disinfectants contains


alcohol?




a. an idophor


b. a quat


c. formalin


d. a tincture of bromine

d

Which antimicrobial chemical has been used to sterilize spacecraft?




a. phenol


b. alcohol


c. heavy metal


d. ethylene oxide



d

Which class of surfactant is most soluble in


water?




a. quaternary ammonium compounds


b. alcohols


c. soaps


d. peracetic acids

a