What is the difference a functional group and macromolecule?

Answer 1

A functional group is a specific group of atoms within a molecule that determines the chemical properties and reactivity of that molecule, such as hydroxyl (-OH) or carboxyl (-COOH) groups. In contrast, a macromolecule is a large, complex molecule typically composed of many smaller subunits, such as proteins, nucleic acids, carbohydrates, and lipids. While functional groups contribute to the properties of individual molecules, macromolecules are formed by the assembly of numerous atoms and smaller molecules, often incorporating multiple functional groups. Thus, functional groups are components of macromolecules, influencing their behavior and interactions.