Fatty acids

Definition

Long-chain organic molecules composed of a hydrocarbon chain with a carboxyl group at one end, used as energy stores and components of cell membranes.

Etymology

From the Latin 'fat' and 'acid'.

Example

Fatty acids are stored in adipose tissue and released when needed for energy.

Related Terms

• Lipids
• Triglycerides
• Cell membranes

Usage Notes

Fatty acids are classified as saturated or unsaturated based on the presence of double bonds in their hydrocarbon chains.