SBB- ABO Exam Questions with 100% Correct Answers

The reactivity of blood group A is confirmed by detecting the presence of which immunodominant sugar molecule? a. N-acetyl-D-neuraminic acid b. L-fucose c. N-acetyl-D-galactosamine d. N-acetyl-D-glucosamine e. D-galactose Correct Answer c The mating of parents of which two ABO phenotypes can potentially produce offspring with ALL of the common four blood types? AB and O AB and A AB and B AB and AB A and B Correct Answer A and B Bombay phenotype (Oh) individuals may have antibodies with all the following specificities EXCEPT: Anti-A Anti-B Anti-H Anti-O Anti-A,B Correct Answer Anti-O Which cells agglutinate most strongly with Ulex europaeus lectin? O and A2 A1 and A2 O and A1B B and A2B A1 and B Correct Answer O and A2 Immune A and B alloantibodies differ from non-red cell stimulated (naturally occurring) A and B alloantibodies in that the immune antibodies: a. Are generally IgG rather than IgM b. Are unable to cross the placenta c. Can be enhanced in reactivity by incubation at 4oC