Question

what is haemoglobin made up of?​

Answer 1

Answer:

The hemoglobin molecule is made up of four polypeptide chains: two alpha chains < >of 141 amino acid residues each and two beta chains < > of 146 amino acid residues each. ... There are four binding sites for oxygen on the hemoglobin molecule, because each chain contains one heme group < >.

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Answer 2

Explanation:

The hemoglobin molecule is made up of four polypeptide chains: two alpha chains < >of 141 amino acid residues each and two beta chains < > of 146 amino acid residues each. ... There are four binding sites for oxygen on the hemoglobin molecule, because each chain contains one heme group.......

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