Question
Biology Question on Blood
'O' blood group is considered as universal donor because it contains
A
A: antigen and 'B' antibody
B
A' antibody and 'B' antigen
C
A' and 'B' antigens and no antibody
D
no antigen but both ;A, and . 'B' antibodies
Answer
no antigen but both ;A, and . 'B' antibodies
Explanation
Solution
Blood transfusion between an incompatible donor and recipient results in agglutination of the red blood cells, causing clogging or blocking of-the capillaries. This is mainly due to the reaction between antigens (A and B) on red blood cells and antibodies (a, b) in the plasma. Individuals with blood group 'O' are without A and B antigens on the red blood cells, and hence they can donate blood to a recipient of any blood group ..