👉 Macromolecules are large, repeating units of a chemical element that can be found in biological systems. They include molecules made up of carbon, hydrogen, and oxygen atoms bonded together to form chains or spheres. For example: 1. Cell walls - composed of cellulose, which is a type of macromolecule. 2. Nucleic acids - DNA and RNA, both of which are also large macromolecules. 3. Lipids - fats and oils that are essential for cell functions and
