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JAMB Biology 2012 Question 40

Question 40

Transport in Animals

Which of the following is true in blood transfusion?

  1. A.A person of blood group AB can donate blood only to another person of blood group AB.
  2. B.Persons of blood groups A and B can donate or receive blood from each other.
  3. C.A person of blood group AB can receive blood only from persons of blood group A or B.
  4. D.A person of blood group O can donate only to a person of blood group O.
Show the answer and explanation

Answer: A (A person of blood group AB can donate blood only to another person of blood group AB.)

Explanation

Group AB blood carries both A and B antigens, so only an AB recipient (with no anti-A or anti-B antibodies) can safely receive it. Group O is the universal donor and AB the universal recipient.