Question

people with type ab blood are considered the \universal recipient\ for transfusions because

their blood cells lack a and b antigens.
their blood lacks a or b agglutinins.
their blood is plentiful in a and b agglutinins.
they usually have very strong immune systems.
they are usually rh negative.

Explanation:

Define ABO blood group antigens

Type AB red blood cells express both A and B antigens on their surface.

Define ABO blood group antibodies

The immune system produces antibodies (agglutinins) against the ABO antigens that are absent on its own red blood cells.

Analyze type AB plasma antibodies

Because type AB individuals possess both A and B antigens, their plasma lacks both anti-A and anti-B antibodies (agglutinins).

Evaluate transfusion compatibility

When receiving a transfusion, the recipient's antibodies can attack the donor's red blood cells. Since type AB blood lacks anti-A and anti-B antibodies, it will not react against transfused red blood cells of any ABO type.

Match with the correct option

The lack of A and B agglutinins (antibodies) in their blood makes them the universal recipient.

Answer:

• (A) their blood cells lack A and B antigens.
• (B) their blood lacks A or B agglutinins. (Correct answer)
• (C) their blood is plentiful in A and B agglutinins.
• (D) they usually have very strong immune systems.
• (E) they are usually Rh negative.