Multiple choice

A blood group has agglutinogen on/in

  1. serum

  2. RBC

  3. plasma

  4. haemoglobin

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Agglutinogens (A and B antigens) are glycoproteins on the surface of red blood cells (RBCs). They determine blood type. Serum (A) contains antibodies, plasma (C) is serum plus clotting factors, and hemoglobin (D) is inside RBCs - none carry agglutinogens.