1. Structure of Cell Membrane: Phospholipids form the membrane of mitochondria, chloroplast, tonoplast, endoplasmic reticulum, nucleus etc.
2. Stored food: Triglycerides are stored in the body as stored food. It provides high amount of calories. Lipids are stored in seeds and cotyledons of plants. 1 gram of fatty acid contains 1.3 kilocalories.
3. Prevention of Perspiration: A coating of waxy substance is formed on the leaves and stems of the plant. This coating prevents sensation.
4. As a heat insulator: fat is stored under the skin in the animal body and forms a layer. It acts as a heat insulator. The fat layer of marjoram animals is thicker and heat insulating.
5. Germination: Lipids stored in the plant body provide energy and nutrients during germination.
6. Photosynthesis: Glycolipids are present in chloroplasts and play an important role in photosynthesis. Beta-carotene absorbs light energy in leaves.
7. Energy production: Lipoproteins produce energy in the body. Lipids contain more energy than sugar. Abu Bakr Siddique
8. Fragrance: Lipids like terpenes create fragrance in plants.
9. Electron flow system: Phospholipids help the electron flow system of mitochondria.
10. Activator: Acts as an activator of lipid enzymes. Oil, ghee, butter etc. contain lipids.
11. In the human body, vitamin A is produced from beta-carotene. Rhodopsin is produced from vitamin A. Rhodopsin contributes to vision. If there is excess triglyceride in the blood, atherosclerosis occurs. Dr. Siddiq Publications
12. As messengers: Lipids act as messengers in organisms. Steroids and eicosanoids provide lipid signaling.
13. Soap making: Soap is made from fat or fat through saponification.
14. Protection from injury: fat covers the body’s kidneys, genitals, eyeballs, etc. and protects it from injury.
15. Vitamin Absorption: Vitamins are transported from the intestine with the help of lipids and stored in fat. Fat soluble vitamins- A, D, E and K have different functions in the body.