Biology
Karl Landsteiner classified human blood into four categories on the basis of proteins (antigens) found on the surface of the RBCs. Compatibility of blood groups must be checked during blood transfusion. Which of the following statements are incorrect ?
P. Blood group 'AB' is the universal donor as it does not contain any antibodies.
Q. Blood group 'AB' is the universal recipient as it contains both the antigens 'A' and 'B'.
R. Blood group 'O' is the universal recipient as it does not contain any antigens.
- Only R
- Only P and R
- Only P and Q
- Only Q and R
Circulatory System
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Answer
Only P and R
Reason — Blood group 'AB' has antigens A and B so people with AB blood group can receive blood from all types, while Blood group 'O' has neither antigen A nor B, so people with blood group O can give their blood to all the groups but can only receive blood from O blood types. Hence, a person with AB blood group is called a universal recipient, and a person with O blood group is called a universal donor.
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