Understand that proteins are large, complex molecules that play many critical roles in the body. They are made up of smaller units called monomers.
Identify the four options given: Nucleotides, Amino acids, Fatty acids, and Monosaccharides.
Recall that nucleotides are the monomers of nucleic acids like DNA and RNA.
Remember that fatty acids are components of lipids, and monosaccharides are the monomers of carbohydrates.
Recognize that amino acids are the building blocks or monomers of proteins, linking together in chains to form polypeptides, which fold into functional proteins.