Identifying Unsaturated Fatty Acids

Fatty acids are essential components of lipids, which play critical roles in biological membranes. They consist of long hydrocarbon chains with a carboxylic acid group at one end. Lipids can be categorized into various types, including saturated and unsaturated fatty acids. Understanding the structure and function of these fatty acids is essential for comprehending how they contribute to cellular functions.

Which of the following types of fatty acids contains one or more double bonds in its hydrocarbon chain?