LIFE SCIENCE

Detailed explanation-1: -Lipids are molecules that contain hydrocarbons and make up the building blocks of the structure and function of living cells. Examples of lipids include fats, oils, waxes, certain vitamins (such as A, D, E and K), hormones and most of the cell membrane that is not made up of protein.

Detailed explanation-2: -Lipids are compounds that are insoluble in water but are soluble in organic solvents such as ether and chloroform. Lipids that are important to our discussion include fats and oils (triglycerides or triacyglycerols), fatty acids, phospholipids, and cholesterol.

Detailed explanation-3: -Natural oils, fats and waxes are primarily obtained from either plant or animal sources, including sunflower, oilseed rape, oil palm, beef tallow, lanolin and beeswax. However, in recent years, algae oil has made an appearance as an attractive alternative for use in cosmetic and toiletry products.

Detailed explanation-4: -Fats are esters of fatty acids with glycerol, and are solid at, room temperature. On the other hand, waxes are esters of fatty acids other than glycerol. They contain one mole of long chain fatty acid esterified with one mole of high molecular weight monohydroxy alcohol.

Detailed explanation-5: -Waxes are a type of long chain nonpolar lipid.