In the functional quaternary structure of human hemoglobin, four polypeptide chains are held together. What type of bonding primarily maintains this multi-subunit arrangement?
Q1. In the functional quaternary structure of human hemoglobin, four polypeptide chains are held together. What type of bonding primarily maintains this multi-subunit arrangement?
Answer: Non-covalent interactions
Explanation: Quaternary structures are stabilized by non-covalent forces like hydrogen bonds and hydrophobic interactions. Peptide linkages only hold individual primary chains.