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Questions and Answers
What is the main structural difference between Fetal hemoglobin (HbF) and normal adult hemoglobin (HbA)?
What is the main structural difference between Fetal hemoglobin (HbF) and normal adult hemoglobin (HbA)?
- HbF has two alpha and two gamma chains, while HbA has two alpha and two beta chains. (correct)
- HbF has two beta and two gamma chains, while HbA has two alpha and two beta chains.
- HbF has four beta chains, while HbA has two alpha and two gamma chains.
- HbF has two beta and two gamma chains, while HbA has four alpha chains.
Why does Fetal hemoglobin (HbF) have a higher affinity for oxygen compared to normal adult hemoglobin (HbA)?
Why does Fetal hemoglobin (HbF) have a higher affinity for oxygen compared to normal adult hemoglobin (HbA)?
- Because the fetal dissociation curve is shifted to the right.
- Because fetal arterial oxygen pressures are higher than adult arterial oxygen pressures.
- Because HbF is composed of four identical gamma chains.
- Due to the presence of a higher concentration of 2,3-BPG in fetal blood. (correct)
Why do whales express high amounts of the O2 carrier protein myoglobin in their muscle tissues?
Why do whales express high amounts of the O2 carrier protein myoglobin in their muscle tissues?
- To decrease their aerobic diving capacity.
- To reduce their need for oxygen during dives.
- To increase their aerobic diving capacity. (correct)
- To increase their dependence on haemoglobin for oxygen transport.
Which factor influences the shift of the Fetal hemoglobin dissociation curve to the left?
Which factor influences the shift of the Fetal hemoglobin dissociation curve to the left?
How does 2,3-BPG affect the binding affinity of oxygen to hemoglobin?
How does 2,3-BPG affect the binding affinity of oxygen to hemoglobin?
What role does Fetal hemoglobin (HbF) play in oxygen delivery to tissues?
What role does Fetal hemoglobin (HbF) play in oxygen delivery to tissues?
Why does maternal hemoglobin release more oxygen for uptake by the fetus?
Why does maternal hemoglobin release more oxygen for uptake by the fetus?
What effect does the higher concentration of 2,3-BPG in maternal blood have on oxygen transport?
What effect does the higher concentration of 2,3-BPG in maternal blood have on oxygen transport?
Why does Fetal hemoglobin (HbF) have a higher affinity for oxygen than normal adult hemoglobin (HbA)?
Why does Fetal hemoglobin (HbF) have a higher affinity for oxygen than normal adult hemoglobin (HbA)?
What structural feature of Fetal hemoglobin (HbF) leads to its left-shifted dissociation curve?
What structural feature of Fetal hemoglobin (HbF) leads to its left-shifted dissociation curve?
How does the presence of 2,3-BPG in maternal blood impact oxygen transport to the fetus?
How does the presence of 2,3-BPG in maternal blood impact oxygen transport to the fetus?
Why do whales with high myoglobin expression in muscle tissues have an increased aerobic diving capacity?
Why do whales with high myoglobin expression in muscle tissues have an increased aerobic diving capacity?
Which factor contributes to the higher affinity for oxygen in Fetal hemoglobin at lower partial pressures?
Which factor contributes to the higher affinity for oxygen in Fetal hemoglobin at lower partial pressures?
How does the presence of 2,3-BPG affect the binding of oxygen to maternal hemoglobin?
How does the presence of 2,3-BPG affect the binding of oxygen to maternal hemoglobin?
What is the role of 2,3-BPG in oxygen transport across the placenta?
What is the role of 2,3-BPG in oxygen transport across the placenta?
Why does Fetal hemoglobin (HbF) deliver bound oxygen to tissues with lower partial pressures?
Why does Fetal hemoglobin (HbF) deliver bound oxygen to tissues with lower partial pressures?
What structural difference between Fetal hemoglobin and normal adult hemoglobin contributes to higher fetal arterial oxygen pressures?
What structural difference between Fetal hemoglobin and normal adult hemoglobin contributes to higher fetal arterial oxygen pressures?
In what way does myoglobin expression in whale muscle tissues differ from the function of HbF and HbA?
In what way does myoglobin expression in whale muscle tissues differ from the function of HbF and HbA?
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