Final answer:
An amphipathic molecule contains both a hydrophilic and a hydrophobic region. Fatty acids exhibit both properties, making them amphipathic.
Step-by-step explanation:
An amphipathic molecule contains both a hydrophilic and a hydrophobic region. In the case of a fatty acid molecule, the hydrocarbon chain is hydrophobic, while the carboxyl group is hydrophilic. Therefore, molecules having both properties, such as fatty acids, are called amphipathic.