Question

part d assessments
complete the following statements:

1. the antigens of the abo blood group are located on the red blood cell ____________.
2. the blood of every person contains one of (how many possible?) ____________ combinations of antigens.
3. type a blood contains antigen ____________.
4. type b blood contains antigen ____________.
5. type a blood contains ____________ antibody in the plasma.
6. type b blood contains ____________ antibody in the plasma.
7. persons with abo blood type ____________ are sometimes called universal recipients.
8. persons with abo blood type ____________ are sometimes called universal donors.

Explanation:

1. ABO blood group antigens are proteins embedded in the outer membrane of red blood cells.
2. The ABO system has 4 antigen combinations: only A, only B, both A and B, and no antigens.
3. Type A blood is defined by the presence of A antigens on red blood cells.
4. Type B blood is defined by the presence of B antigens on red blood cells.
5. To avoid attacking self-antigens, Type A blood has anti-B antibodies in plasma that target foreign B antigens.
6. To avoid attacking self-antigens, Type B blood has anti-A antibodies in plasma that target foreign A antigens.
7. Type AB blood has both A and B antigens, so it has no anti-A or anti-B antibodies, allowing it to receive all blood types.
8. Type O blood has no A or B antigens, so its red blood cells will not be attacked by antibodies in any recipient's plasma.

Answer:

1. membrane
2. 4
3. A
4. B
5. anti-B
6. anti-A
7. AB
8. O