The Following Statements About Hemoglobin F (Fetal Hb) Are All

question 60

Multiple Choice

The following statements about hemoglobin F (fetal Hb) are all true EXCEPT

• A) The P50 for O₂ is closer to 20 torr than 27 torr which is the P50 for adult Hb.
• B) The beta chains are identical to those in adult hemoglobin.
• C) Some terminal amino groups are acetylated.
• D) The positive charges in the BPG binding cleft are fewer than in adult hemoglobin.
• E) The diminished ability to unload O₂ is offset by a higher than adult concentration

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