The carbons and oxygens of the carboxylic acid functional group are red. (B) This is the structure of oleic acid ... oleic acid is an example of a monounsaturated fatty acid.

Carboxylic acids can undergo reduction reactions. Reduction is the opposite of oxidation. For example, ethanoic acid (CH 3 COOH) can be formed by the oxidation of ethanol as shown below.

Protein molecules are long chains of amino acids that are folded into a three-dimensional shape. Chemically, an amino acid is a molecule that has a carboxylic ... For example, some amino acids ...