BLOOD BANK FINAL EXAM (PREVIOUS TEST
QUESTIONS AND ANSWERS) LATEST.{GRADED A+}
What percentage of the group A population are type A2? - ✔✔20%
Match the fisher-race notation with the correct Weiner notation: r" - ✔✔Ce
Match the fisher-race notation with the correct Weiner notation: R0 -
✔✔Dce
What frequency of the population is D positive? - ✔✔85%
After adding antigen and antibody to a test tube, one large agglutinate was
observed. How should this reaction be graded? - ✔✔4+
ABO blood group antigens are expresses as ____ traits. - ✔✔Codominant
Polyspecific antihuman globulin contains - ✔✔anti-IgG AND anti-C3d
Using Wiener nomenclature, a patient is r' What Rh antigens does this
patient possess? - ✔✔C, e
Name the anti-H lectin - ✔✔Ulex europaeus
An individual lacking all antigens of the Rh blood group system is classified
as - ✔✔Rh null
,All of the following statements regarding ABO antibodies are true EXCEPT:
A) They are implicated in hemolytic transfusion reactions
B) They are naturally occurring and expected
C) They are not produced in neonates until after 12 months of age
D) They are routinely IgM and react optimally at room temperature -
✔✔They are not produced in neonates until after 12 months of age
A blood sample from a 90-year-old man was submitted to the blood bank
for a type and screen before surgery. The forward type demonstrates as a
group A, whereas the reverse type appears to be group AB. The most likely
cause of the discrepancy is: - ✔✔that patient has low-titer isoagglutinins
An individual who is Group A cannot produce a child who is Group B? T/F -
✔✔False
Match the following phenotypes with the most probable genotype in the
Weiner nomenclature: DcE - ✔✔R2R2
Match the following phenotypes with the most probable genotype in the
Weiner nomenclature: DCe - ✔✔R1R1
The genotypes of parents are as follows: BO and AB. Determine the
percentage of genotypes of each possible combination in the mating of
these parents. - ✔✔25% AB, 25% AO, 25% BB, 25% BO
, The genotypes of parents are BO and AB. Determine the percentage of
phenotypes of each possible combination in the mating of these parents. -
✔✔25% AB, 25% A 50% B
The most serious transfusion reactions are due to incompatibility in which
of the following blood group systems? - ✔✔ABO
Briefly explain why testing for the D antigen using high-protein anti-D
reagent requires that an Rh control reagent must also be tested. - ✔✔the
control should be negative this ensures we are testing properly
The expression of the gene that can be observed is called - ✔✔Phenotype
Name the direct gene product of the B gene - ✔✔D-galactose
Group O donor red blood cells cannot be transfused to a person who has
"Bombay blood because the red cells of the donor contain - ✔✔H antigen
The immediate spin testing on a unit of donor blood with anti-D is negative.
A weak D test is performed on the unit of donor blood and exhibits a 2+
reaction. The donor blood unit is labeled as - ✔✔D positive
Name the transferase enzyme and what sugar it transfers for the following
gene: H - ✔✔L-fucose
Most "naturally occurring" ABO system antibodies fall into which class? -
✔✔IgM
QUESTIONS AND ANSWERS) LATEST.{GRADED A+}
What percentage of the group A population are type A2? - ✔✔20%
Match the fisher-race notation with the correct Weiner notation: r" - ✔✔Ce
Match the fisher-race notation with the correct Weiner notation: R0 -
✔✔Dce
What frequency of the population is D positive? - ✔✔85%
After adding antigen and antibody to a test tube, one large agglutinate was
observed. How should this reaction be graded? - ✔✔4+
ABO blood group antigens are expresses as ____ traits. - ✔✔Codominant
Polyspecific antihuman globulin contains - ✔✔anti-IgG AND anti-C3d
Using Wiener nomenclature, a patient is r' What Rh antigens does this
patient possess? - ✔✔C, e
Name the anti-H lectin - ✔✔Ulex europaeus
An individual lacking all antigens of the Rh blood group system is classified
as - ✔✔Rh null
,All of the following statements regarding ABO antibodies are true EXCEPT:
A) They are implicated in hemolytic transfusion reactions
B) They are naturally occurring and expected
C) They are not produced in neonates until after 12 months of age
D) They are routinely IgM and react optimally at room temperature -
✔✔They are not produced in neonates until after 12 months of age
A blood sample from a 90-year-old man was submitted to the blood bank
for a type and screen before surgery. The forward type demonstrates as a
group A, whereas the reverse type appears to be group AB. The most likely
cause of the discrepancy is: - ✔✔that patient has low-titer isoagglutinins
An individual who is Group A cannot produce a child who is Group B? T/F -
✔✔False
Match the following phenotypes with the most probable genotype in the
Weiner nomenclature: DcE - ✔✔R2R2
Match the following phenotypes with the most probable genotype in the
Weiner nomenclature: DCe - ✔✔R1R1
The genotypes of parents are as follows: BO and AB. Determine the
percentage of genotypes of each possible combination in the mating of
these parents. - ✔✔25% AB, 25% AO, 25% BB, 25% BO
, The genotypes of parents are BO and AB. Determine the percentage of
phenotypes of each possible combination in the mating of these parents. -
✔✔25% AB, 25% A 50% B
The most serious transfusion reactions are due to incompatibility in which
of the following blood group systems? - ✔✔ABO
Briefly explain why testing for the D antigen using high-protein anti-D
reagent requires that an Rh control reagent must also be tested. - ✔✔the
control should be negative this ensures we are testing properly
The expression of the gene that can be observed is called - ✔✔Phenotype
Name the direct gene product of the B gene - ✔✔D-galactose
Group O donor red blood cells cannot be transfused to a person who has
"Bombay blood because the red cells of the donor contain - ✔✔H antigen
The immediate spin testing on a unit of donor blood with anti-D is negative.
A weak D test is performed on the unit of donor blood and exhibits a 2+
reaction. The donor blood unit is labeled as - ✔✔D positive
Name the transferase enzyme and what sugar it transfers for the following
gene: H - ✔✔L-fucose
Most "naturally occurring" ABO system antibodies fall into which class? -
✔✔IgM
