Other questions in this quiz

2. Where is BPG commonly found?

  • Erythrocytes
  • Metabolizing tissues
  • The lungs

3. What does the proximal histidine do?

  • Binds reversibly to the iron ion, pulling the haem group back into the plane
  • Binds to the iron ion, distorting the haem group
  • Weakens CO binding by weakening the C-O bond

4. Why does foetal Hb have a higher O2 affinity at lower pO2?

  • Foetal Hb is not affected by any negative allosteric inhibitors
  • BPG binds less tightly to foetal Hb
  • Foetal Hb is generally more stable in the oxy form

5. What effect does increasing temperature have on Hb?

  • It reduces the affinity for O2
  • It increases the affinity for O2


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