One of the Skin-Irritating Components of Poison Oak Is Tetrahydrourushiol

question 67

Multiple Choice

One of the skin-irritating components of poison oak is tetrahydrourushiol: The long, nonpolar hydrocarbon tail embeds itself in a person's oily skin, where the molecule initiates an allergic response. Scratching the itch spreads tetrahydrourushiol molecules over a greater surface area, causing the zone of irritation to grow. Is this compound an alcohol or a phenol?

• A)an alcohol because of the hydroxyl groups it contains
• B)both a phenol and an alcohol because of the hydroxyl groups it contains
• C)a phenol because of the hydroxyl groups attached to the benzene ring
• D)neither an alcohol or phenol because it contains two hydroxyl groups instead of one

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