Q1. A person with the __________ blood group can accept blood from all, while a person with the __________ blood group can donate blood to all.
A O+ ; AB+ respectively
B O- ; AB+ respectively
C AB+ ; O- respectively Correct
D AB+ ; O+ respectively
Explanation
In the ABO and Rh system, AB+ is the universal recipient because it has A, B and Rh antigens and therefore does not make antibodies against these common donor antigens. O- is the universal donor because its red blood cells lack A, B and Rh antigens, so they are least likely to be attacked by the recipient's antibodies. O+ cannot receive from all groups because it has anti-A and anti-B antibodies. AB+ cannot donate to all because its cells carry several antigens. O+ also is not universal because Rh-negative recipients may react to Rh-positive blood.