Which of the Following Statements Best Describes the Structure of a Hemoglobin

question 4

Multiple Choice

Which of the following statements best describes the structure of a hemoglobin molecule?

• A) Hemoglobin is composed of four globin molecules, each with their own heme group that binds to and carries oxygen.
• B) Hemoglobin is composed of two globin molecules, both with their own heme group that binds to and carries oxygen.
• C) Hemoglobin is composed of four globin molecules, each of which contains millions of heme groups.
• D) Hemoglobin is composed of three globin molecules and one heme group per hemoglobin molecule.

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