Multiple choice

Which blood group does not have antigens present in it?

  1. A

  2. B

  3. AB

  4. O
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Blood group O lacks both A and B antigens on red blood cells. It is known as the 'universal donor' because the absence of antigens means it can be transfused to recipients with any blood type without causing an immune reaction.

Keep practicing — related questions