Persons with “AB” blood group are called as “Universal recipients”. This is due to:
Answer: (B) Absence of antibodies, anti-A and anti-B, in plasma. Answer: (B) Absence of antibodies, anti-A and anti-B, in plasma Solution: A person with AB blood group has both A and B antigens on the RBC surface and therefore carries neither anti-A nor anti-B antibodies in the plasma.
- A.Presence of antibodies, anti-A and anti-B, on RBCs
- B.Absence of antibodies, anti-A and anti-B, in plasma✓
- C.Absence of antigens A and B on the surface of RBCs
- D.Absence of antigens A and B in plasma
Correct Answer
(B) Absence of antibodies, anti-A and anti-B, in plasma
Solution & Explanation
Answer: (B) Absence of antibodies, anti-A and anti-B, in plasma Solution: A person with AB blood group has both A and B antigens on the RBC surface and therefore carries neither anti-A nor anti-B antibodies in the plasma. With no antibodies to react against donor antigens, AB individuals can receive blood of any group and are called universal recipients. NCERT Reference: NCERT Class XII, Ch 4, p.61, lines 026-028: "But when IA and IB are present together they both express their own types of sugars: this is because of co-dominance. Hence red blood cells have both A and B types of sugars."