Final answer:
Lipids are organic compounds that are insoluble in water but soluble in organic solvents. They serve multiple functions in living organisms, including being a main source of energy, long-term storage and waterproofing.
Step-by-step explanation:
Lipids are organic compounds that are insoluble in water but soluble in organic solvents. They serve multiple functions in living organisms, including being a main source of energy, long-term storage and waterproofing.
As a main source of energy, lipids provide more than double the amount of energy per gram compared to carbohydrates or proteins. They are stored in adipose tissue and can be broken down when energy is needed.
Furthermore, lipids are essential for waterproofing in organisms. For example, the waxy cuticles on the surface of leaves and fruits are composed of lipids, preventing excessive water loss through evaporation.
Learn more about Lipids in living organisms