Carbohydrates: Carbohydrates are one type of biological macromolecule that serve as a source of energy and provide structural support.
Lipids: Lipids are another type of biological macromolecule that store energy, insulate the body, and form cell membranes.
Proteins: Proteins are complex biological macromolecules involved in many cellular processes such as enzymatic reactions, cell signaling, and structural support.