The correct pairing of a macromolecule with its monomer is:
Carbohydrate - Monosaccharide
The other pairings are incorrect:
- Lipids are not made of amino acids; they are primarily made of fatty acids and glycerol.
- Proteins are made of amino acids, not nucleotides.
- Nucleic acids are made of nucleotides, not fatty acids.
So the right answer is Carbohydrate - Monosaccharide.