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WAEC Biology 2012 Question 51

Question 51

Transport in Animals

Which of the following statements is true about the ABO blood group system?

  1. A.Antigens are located on the surface of white blood cells.
  2. B.Antibodies are located in the blood plasma.
  3. C.Antibodies are located on the surface of red blood cells.
  4. D.Antigens are located in the blood plasma.
Show the answer and explanation

Answer: B (Antibodies are located in the blood plasma.)

Explanation

In the ABO system the antigens are on red blood cells and the antibodies (anti-A, anti-B) are in the plasma.