Red Cell Antigens

15 Points Per Correct Answer - No time limit  

1. What is the A1 antigen? D-galactose Glycophorin A Acetylcholinesterase N-acetyl-D-galactosamine

2. What is the structure forming the antigen(s) of the Indian blood group system? Kell glycoprotein Unknown Kidd glycoprotein CD44

3. After the ABO blood group system, what is the second most clinically significant antigen system? Lewis blood group system Rh blood group system Colton blood group system Kell blood group system

4. What is the antigen missing in persons with the Bombay phenotype? B antigen I antigen H antigen A antigen

5. Which two red cell antigens are not formed as part of the red cell membrane? Lutheran and Colton antigens Lewis and Chido/Rodgers antigens Gerbich and Cromer antigens Knops and Dombrock antigens

6. What is an ABO blood group subtype? Non-existent A mutation A variant form of a known antigen An arbitrary designation for different countries

7. Where did the name of the name of the Duffy blood group system come from? The surname of the person who discovered the antigens The surname of the first person to show antibodies to the antigens The first name of the person who discovered the antigens The first name of the first person to show antibodies to the antigens

8. What is one mechanism for the acquired B phenotype? Modification of the A antigen to form a B antigen by bacterial enzymes Mutational change in proportion to age Drug therapy There is no such thing as an acquired B phenotype

9. Which red cell antigen is the receptor for the malarial parasite Plasmodium vivax? Duffy Lutheran Kidd Diego

10. Which red cell antigen is missing or shows very weak expression in McLeod syndrome? Diego antigen Scianna antigen Kidd antigen Kell antigen