Ch. 7 The Rh Blood Group System Pg. 169 Textbook Questions A+ Graded

1. The Rh system was first recognized in a case report of: a. A hemolytic transfusion reaction. b. Hemolytic disease of the fetus and newborn. c. Circulatory overload. d. Autoimmune hemolytic anemia. - Correct Answer a. A hemolytic transfusion reaction. 2. What antigen is found in 85% of the white population and is always significant for transfusion purposes? a. d b. c c. D d. E - Correct Answer c. D 4. Cells carrying a weak-D antigen require the use of what test to demonstrate its presence? a. Indirect antiglobulin test b. Direct antiglobulin test c. Microplate test d. Warm autoadsorption test - Correct Answer a. Indirect antiglobulin test 5. How are Rh antigens inherited? a. Autosomal recessive alleles b. Sex-linked genes c. Codominant alleles d. X-linked - Correct Answer c. Codominant alleles 6. Biochemically speaking, what type of molecules are Rh antigens? a. Glycophorins b. Simple sugars c. Proteins d. Lipids - Correct Answer c. Proteins 7. Rh antibodies react best at what temperature (°C)? a. 22 b. 18 c. 15