blood hemoglobin molecule |
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The main function of hemoglobin is to transport oxygen from the lungs to the tissues and then transport carbon dioxide back from the tissues to the lungs. One hemoglobin molecule has the ability to transport up to 4 oxygen molecules. Hemoglobin is a tetramer composed of 4 globin molecules; 2 alpha globins chains and 2 beta globin chains, each comprised of 8 helical segments. Each globin chain also |
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