Multiple choice

Which blood group does not have any antigen but possesses both a and b antibodies?

  1. A

  2. O

  3. B

  4. AB
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Blood group O is characterized by the absence of both A and B antigens on the surface of red blood cells. However, individuals with type O blood possess both anti-A and anti-B antibodies in their plasma. This makes type O the universal donor for red blood cells, as their cells can be transfused to recipients of any ABO type without triggering an immune response.

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