The monomers of proteins (select all that apply) polypeptides
amino groups
amino acids
R groups

Would the answer just be Amino Acids? I selected all 4, but that was wrong, so I am thinking it might just be Amino Acid or (Amino Acid+polypeptides)?

amino groups

amino acids

R groups

Explanation:

I think these are right.

Because a polypeptide chain is polymer of amino acids that are linked together so that mean a polypeptide chain is protien.

clinically, some people often have repeated allergies, eczema and respiratory infections or other parts of the infection, in this case, in addition to some routine tests such as tests for white blood cells, immunoglobulin series, lymphocyte subsets, etc., the five immune immunoglobulin tests are also necessary.