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Oxygen carried in a hemoglobin molecule is bound to a/an A. calcium atom. B. globulin molecule. C. iron atom. D. protein molecule.
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Oxygen carried in a hemoglobin molecule is bound to a/an

A. calcium atom.
  B. globulin molecule.
  C. iron atom.
  D. protein molecule.

User PhilLab
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3 votes
The answer is C. Hope this helps!
User Onurgule
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2 votes
C. Iron atom is bound to oxygen
User Lecstor
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