Why Is Ethanol, Which Is Deadly to Bacterial Cells, Safe

question 27

Multiple Choice

Why is ethanol, which is deadly to bacterial cells, safe to use on our hands?

• A) Our skin cells have a different kind of cell wall from that of a bacterial cell.
• B) The outer layer of our skin is composed of dead cells and serves as a protective barrier.
• C) Ethanol does damage our skin but in such small amounts that we don't feel it.
• D) The temperature outside our bodies is not the correct temperature for ethanol to work.
• E) Ethanol only reacts with the type of protein found inside a bacterial cell.

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