Memotiva AP Biology Unit 1 Topic 1.2: Elements of Life — Carbon, Hydrogen, Oxygen, Nitrogen, Phosphorus, Sulfur (CHNOPS)

What is the hydroxyl functional group?

AP Biology Unit 1 Topic 1.2: Elements of Life — Carbon, Hydrogen, Oxygen, Nitrogen, Phosphorus, Sulfur (CHNOPS)

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Nortren·April 11, 2026

What is the hydroxyl functional group?

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The hydroxyl group consists of an oxygen bonded to a hydrogen, written as dash O H. It is polar and forms hydrogen bonds with water, making molecules with hydroxyl groups water-soluble. Alcohols and sugars contain hydroxyl groups.