a combining form representing idea, in compound words: ideology. ideo-.
Monomers of: Carbohydrates- Glucose Lipids- Fatty acids and glycerol Proteins- Amino acids Nucleic acids- Nucleotides Is an explanation really needed for this because it's really simple to understand?
These lipids (known also as monoglycerides) are fatty acid monoesters of glycerol and thus, due to the orientation of that molecule, two isomeric forms exist: R is a saturated or an unsaturated hydrocarbon chain. The external carbons are frequently named a and the central one b. Some monoglycerides are monoesters of terpenic or phenolic acids, in animals or vegetals, respectively.