Answer:
Nucleic acid – Monomer: Nucleotide with 1 of 4 nitrogenous bases ( Adenine, Guanine, Cytosine, Thiamine or Uracil)
Protein – Monomer: Amino Acids, Polymer: Polypeptide used as building blocks for living tissue.
Lipid: Used for long term energy storage saturated and unsaturated fatty acid tails.
Carbohydrate: Monomer: monosaccharide, Polymer: Polysaccharide, Main source of energy and used for some structures.