Question

which type of molecules combine to make up the protein portion of hemoglobin?
polysaccharides
amino acids
monosaccharides
fatty acids

Explanation:

Proteins are polymers made up of amino - acid monomers. Hemoglobin is a protein, so its protein portion is composed of amino acids. Polysaccharides and monosaccharides are related to carbohydrates, and fatty acids are related to lipids.

Answer:

B. amino acids