With which part of Hb,O_2 molecules bind? | vedclass

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(A) Haemoglobin $(Hb)$ is a conjugated protein consisting of a protein part called globin and a non-protein part called haem.The haem group contains a

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Haem

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(A) Haemoglobin $(Hb)$ is a conjugated protein consisting of a protein part called globin and a non-protein part called haem.The haem group contains an iron atom in the ferrous state $(Fe^{2+})$.This $Fe^{2+}$ ion has a specific affinity for oxygen,allowing $O_2$ molecules to bind directly to the haem group to form oxyhaemoglobin.

With which part of $Hb$,$O_2$ molecules bind?

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