Question

what is lacking on the surface of type o blood cells but can be found on type a, type b, and type ab blood cells? a phagocytes b antigens c platelets d hemoglobin

Explanation:

Blood types are determined by the presence or absence of certain antigens on the surface of red - blood cells. Type O blood cells lack A and B antigens, while type A, B, and AB blood cells have either A, B, or both A and B antigens respectively. Phagocytes are immune cells, platelets are involved in blood clotting, and hemoglobin is the oxygen - carrying protein in red blood cells, none of which are related to this blood - type distinction.

Answer:

B. antigens