Biochemistry Which of the following is not true about buffering action of haemoglobin (Hb)? A Hb is technically intracellular buffer B Hb is functionally a plasma buffer C Hb's buffering action is due to its histidine content D Oxygenated Hb is a strong base 💡 Explanation Which of the following is not true about buffering action of haemoglobin (Hb)? ✓ Correct Answer: B. Hb is functionally a plasma buffer