3
QuizMultiple Choice

Blood

Question 3 • 24 - 25 CR - Biology B (0411KB)

Why is blood type AB+ considered the universal receiver?

Answer
A
It has no antibodies that can attack the antigens on the red blood cells of the other blood types.
B
It has no antigen on its red blood cells that can be attacked by the antibodies in the other blood types.
C
It has no Rh antigen on its red blood cells that can be attacked by the antibodies in the other blood types.
D
It has no A and B antigens on its red blood cells that can be attacked by the antibodies in the other blood types.

Explanation

For red blood cell transfusions, a recipient’s antibodies must not attack the donor cells. People with AB blood normally have neither anti-A nor anti-B antibodies, and Rh-positive recipients can receive Rh-positive or Rh-negative blood. Thus AB+ can receive red blood cells from all ABO/Rh types; choice A gives the key reason.

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