Here are the items matched to their corresponding descriptions:
1. **A macromolecule made up of mainly carbon and hydrogen atoms that is primarily used for energy storage and in cell membranes.** - **Lipid**
2. **A macromolecule that contains carbon, hydrogen, oxygen, and nitrogen, which is used by the body for growth and repair.** - **Protein**
3. **This is the repeating structural unit that forms RNA and DNA.** - **Nucleotide**
4. **This is a molecule with a large molecular mass; many examples come from biology and in particular chemistry.** - **Macromolecule**
So the final matches are:
- Lipid
- Protein
- Nucleotide
- Macromolecule