AP BIOLOGY

Detailed explanation-1: -Lipids are fatty, waxy, or oily compounds that are soluble in organic solvents and insoluble in polar solvents such as water. Lipids include: Fats and oils (triglycerides)

Detailed explanation-2: -4: A triglyceride molecule can be formed from any combination of fatty acids. Triglycerides function as a long-term storage form of energy in the human bods. Because of the long carbon chains, triglycerides are nearly nonpolar molecules and thus do not dissolve readily in polar solvents such as water.

Detailed explanation-3: -One major class of lipids is called glycerolipids. Glycerolipids are composed of glycerol and fatty acids.

Detailed explanation-4: -Glycerol is a triol, an alcohol which contains three hydroxyl functional groups. A fatty acid is a long carbon chain, generally from 12 to 24 carbons in length, with an attached carboxyl group. Each of the three fatty acid molecules undergoes an esterification with one of the hydroxyl groups of the glycerol molecule.