We Use Soap to Clean Ourselves Better Than We Could

question 2

Multiple Choice

We use soap to clean ourselves better than we could with water alone.Soaps contain phospholipids that are responsible for the cleansing action.Which of the following statements is the most likely explanation for how soaps work?

• A)Phospholipids are ions and therefore mix with both the water and oily dirt.
• B)Phospholipids are completely hydrophilic,and therefore oily dirt takes the place of the phospholipid molecules that would be dissolved in the rinse.
• C)The phospholipid tail attaches to the oily dirt while the phospholipid head interacts with the rinse water and carriers the dirt (and soap)away with it.
• D)The nonpolar fatty acid chains that make up the heads of the phospholipid are hydrophilic,and thus are repelled by the water.

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