Which fatty acid contains more than two double bonds?

The correct answer identifies polyunsaturated fat as the type of fatty acid that contains more than two double bonds in its carbon chain. Fatty acids are categorized based on the number of double bonds they contain.

Polyunsaturated fats have multiple carbon-carbon double bonds, with two or more occurring along the carbon chain. This structure influences their physical and chemical properties, contributing to the fluidity of cell membranes and playing crucial roles in various metabolic processes. Common sources of polyunsaturated fats include fatty fish, walnuts, flaxseeds, and sunflower oil.

In contrast, monounsaturated fats contain only one double bond, and saturated fats contain no double bonds at all. Trans fats, while they can have multiple double bonds, are typically altered during hydrogenation, which changes their structure but does not define them as polyunsaturated fats. Understanding these distinctions is essential for making informed dietary choices relating to heart health and overall nutrition.