SBB Practice test Review Questions and Answers Rated A+

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SBB Practice test Review Questions and Answers Rated A+ What enzyme may be useful in distinguishing anti-Ge2 from anti-Ge3? -✔✔ Papain (Anti-Ge2 will not react) The beta 1-3 linkage between g... alactose and N-actylglucosamine is found in: -✔✔ Secretions Which of the following represents the Type II chain? -✔✔ Beta 1-4 linkage between galactose and N acetyl glucosamine Rank the order of decreasing H concentration on RBCs -✔✔ 0>A2>B>A2B>A1>A1B All of the following are genotypes for the A1 phenotype except: 1. A1/A1 2. A1/A2 3. A2/B 4. A1/O -✔✔ A2/B The ABO genes are located on which chromosome? -✔✔ 9 Which glycosyltransferase is needed before A and B antigens are formed? -✔✔ L-fucosyltransferase What is the typical reaction of the A3 subgroup? -✔✔ mixed field reaction with Anti-A and Anti-A,B What is the typical reaction of the Ael subgroup? -✔✔ Positive reaction with anti-H What clinical condition may yield positive reactions with Anti-A, negative with Anti-B, negative with A1 and B cells. -✔✔ Hypogammaglobulinemia What differentiates a Bombay anti-H from an anti-H cold agglutin? -✔✔ Reactivity at body temperature The is antigen is associated with linear carbohydrate chains? -✔✔ i antigen The following reactions are found on a 35 yr old male. Anti-A 4+, Anti-B 0, Anti-A,B-4+, A1 cells 3+, B cells 4+, O cells 3+. How could these be explained? -✔✔ Anti-M in plasma Anti-IH would react best with which RBC? -✔✔ O The acquired B phenomenon is only found in which ABO group? -✔✔ A Which of the following is true about the A2 subgroup? 1. 1-8% of persons will product anti-A1 2. Anti-A1 does not react with A2 RBCs 3. Anti-A2 is formed 4. Two of the above -✔✔ Two of the above (1-8% of persons will product anti-A1 and Anti-A1 does not react with A2 RBC ) Anti-Lu3 is associated with: -✔✔ Recessive type Lu(a-b-) The dominant Lu(a-b-) type is associated with what gene? -✔✔ In(Lu) What substance could be used to rule out anti-E in the presence of anti-Lub? -✔✔ DTT Which pair of alleles is out of place? 1. Lu8/Lu14 2. Lu8/Lu10 3.Lu6/Lu9 4. Aua/Aub -✔✔ Lu8/Lu10 Persons who are group B are more common among which population? -✔✔ Black/Asian Red cells that lack glycophrin A also lack: -✔✔ Ena antigens Anti-ENKT reacts with which RBCs? -✔✔ ENaFS What is a lectin? -✔✔ Seed extracts that agglutinate human cells with moderate specificity All of the following are representative of Lewis antibodies, except? 1. They can be neutralized by Lewis substance 2. They occur frequently in pregnant women 3. They are destroyed by enzymes 4. They are enhanced by enzymes -✔✔ They are destroyed by enzymes Why can anti-H sometimes be fund in A2B persons? -✔✔ The specific immunodominant sugar blocks the presence of H antigen Why is determenantion of Rh status crucial for obstetric patients? -✔✔ All Rh negative mothers are possible candidates for Rhogam An adult who inherits Le,Se and H will type as: -✔✔ Le(a-b+) What immunodominant sugar is responsible for B specificity? -✔✔ D galactose Red cells that phenotype as Le(a-b-) will convert to Le(a+b-) when incubated with plasma from an adult containing? -✔✔ Le(a+) substance What genotype does hh represent? -✔✔ Bombay The Rh gene is located on chromosome? -✔✔ 1 Why are Lewis antibodies no implicated in hemolytic disease of the newborn? -✔✔ Lewis antigens are poorly developed at birth What substances will be present in the saliva of a person with the LeLe HH SeSe AA genotype? -✔✔ A, H, Lea, Leb How is Le(b) substance formed? -✔✔ L fucose is added to the subterminal N acetylglucosamine of type 1H substance [Show More]

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