Ch. 9 - Controlling Microbial Growth in the Environment
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Problem 15
How can campers effectively treat stream water to remove pathogenic protozoa, bacteria, and viruses?
Problem 16
Which of the following chemicals is active against bacterial endospores?
a. Copper ions
b. Ethylene oxide
c. Ethanol
d. Triclosan
Problem 17
Which of the following disinfectants acts against cell membranes?
a. Phenol
b. Peracetic acid
c. Silver nitrate
d. Glutaraldehyde
Problem 18
Which of the following disinfectants contains alcohol?
a. Iodophor
b. Quat
c. Formalin
d. Tincture of bromine
Problem 19
Which antimicrobial chemical has been used to sterilize spacecraft?
a. Phenol
b. Alcohol
c. Heavy metal
d. Ethylene oxide
Problem 20
Which class of surfactant is most soluble in water?
a. Quaternary ammonium compounds
b. Alcohols
c. Soaps
d. Peracetic acids