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BIOLOGY

JAMB 2012 - Question 40

Biology 2012 JAMB Past Questions - Question 40: Which of the following is true in blood transfusion?

Choose the most appropriate option for the gap .

Which of the following is true in blood transfusion?

A: A person of blood group AB can donate blood only to another person of blood group AB

B: Persons of blood groups A and B can donate or receive blood from each other.

C: person of blood group AB can receive blood only from persons of blood group A or B.

D: A person of blood group O can donate oniy to a person of blood group O.

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Correct Answer

Explanation

This is because blood group AB contains antigens 'A' and ' B' . If blood from blood group AB is transfused to a recipient of blood group A, the antigen A of incoming blood will react with antibody 'b' of the recipient to cause agglutination. If it goes into blood group 'B', the antigen 'B' of incoming blood will react with antibody 'a' of the recipient to cause agglutination. Similarly, if it goes to blood group O, the antigens 'A' and 'B' of incoming blood will react with antibodies 'b' and 'a' of the recipient blood to produce the same effect