The Most Concentrated Forms of Ethanol and Isopropyl Alcohol Are

question 29

Multiple Choice

The most concentrated forms of ethanol and isopropyl alcohol are less bactericidal than the diluted forms of these alcohols.Why?

• A) No free radicals are present in solution to kill the bacteria.
• B) Only the dilutions can dissolve the lipopolysaccharide cell walls.
• C) Proteins are not denatured readily in the absence of water.
• D) Killing bacteria also requires the solution be heated, and it is difficult to heat concentrated alcohols because they are flammable.

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