What Provides the Oxygen-Carrying Capability in the Blood

question 21

Multiple Choice

What provides the oxygen-carrying capability in the blood?

• A) hemoglobin protein in the red blood cells
• B) four heme groups in each of the hemoglobin proteins
• C) Iron in each of the heme groups physically binds to oxygen.
• D) A and B only
• E) A, B, and C all provide oxygen-carrying capability.

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