* Simple sugars are the basic building blocks of carbohydrates. They are also called monosaccharides. Examples include glucose, fructose, and galactose.

* Polysaccharides are complex carbohydrates made up of many simple sugar units linked together.

* Glycerol and fatty acids are the building blocks of lipids (fats and oils).

* DNA is a nucleic acid made up of long chains of nucleotides.

* Amino acids are the building blocks of proteins.

Let me know if you have any other questions!