* Transporting genetic information. This is the primary function of nucleic acids like DNA and RNA.

Here's a breakdown of the major functions of lipids:

* Energy storage: Lipids are the most efficient form of energy storage in organisms. Fats and oils store more energy per gram than carbohydrates or proteins.

* Structural components: Lipids make up cell membranes (phospholipids), providing structure and regulating what enters and exits the cell. They also contribute to the structure of other tissues like the nervous system (myelin).

* Hormonal signaling: Steroid hormones, like estrogen and testosterone, are derived from lipids and play vital roles in regulating numerous bodily functions.

* Insulation: Fats under the skin act as insulators, helping to maintain body temperature.

* Protection: Lipids can cushion and protect organs and tissues.

Let me know if you'd like more details on any of these functions!