Oxygen Binds Directly to Which Component of Hemoglobin

question 13

Multiple Choice

Oxygen binds directly to which component of hemoglobin?

• A)the four pyrrole nitrogens in the core of protoporphyrin
• B)the ferrous iron in the core of protoporphyrin
• C)the ferric iron in the core of protoporphyrin
• D)2,3-BPG bound in the central cavity of the hemoglobin tetramer

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