Question

What are the major functions of lipids in living organisms?

Answer 1

Lipids perform several biological functions. Some of them are:

1. Lipids such as triglycerides are storage compounds for the reserve energy of the body.
2. Lipids are important component of the plasma membrane structure in eukaryotic cells and regulate membrane permeability.
3. They serve as a source of fat soluble vitamins (A, D, E, K)
4. In nerve fibers, the myelin sheath contains lipids which act as electrical insulators.
5. Lipids occur as components of some enzyme systems
6. Lipids are important as cellular metabolic regulators (Prostaglandins and steroid hormones)
7. Cholesterol is found in the cell membrane of many organisms and in blood and bile.