Please choose the class of chemical agents to which quaternary ammonium compounds belong.
A) Detergents
B) Oxidizing agents
C) Halogens
D) Phenolics
E) Aldehydes
A) Detergents
Biology & Microbiology
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a. 1-5% b. 10-15% c. 20-25% d. 50-55% e. 70-75%
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Human muscle is made up of
a. slow-twitch fibers. b. fibrous connective tissue. c. polymerated red blood cells. d. fast-twitch fibers. e. a mixture of slow- and fast-twitch muscles.
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The main storehouse for substances in sedimentary cycles is ____
a. oceans b. air c. Earth’s crust d. fresh water e. sand
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After the Decolorization step in Gram staining, Gram-positive bacteria will appear
A. Pink/red in color B. Green in color C. Brown in color D. Blue/Purple in color E. Colorless
Biology & Microbiology