How does deoxygenated haemoglobin help to buffer blood pH?

1. A Option A: It releases H⁺ ions into the plasma
2. B Option B: It accepts H⁺ ions to form haemoglobinic acid (HHb)
3. C Option C: It converts H⁺ ions into oxygen
4. D Option D: It binds Cl⁻ ions to form hydrochloric acid

Answer checked 11 October 2026 · How we write and check questions