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5 Cards in this Set

  • Front
  • Back
How many subunits in hemoglobin molecule?
4
What is each subunit composed of?
A protein molecule
What is contained in each protein molecule?
Heme molecule
What is heme molecule composed of?
Porphyrin ring and an Fe atom
What is the purpose of the Fe atom within the porphyrin ring?
Binding site for oxygen