ABO ACTUAL PAPER 2026 QUESTIONS WITH
SOLUTIONS GRADED A+
◉ Human red blood cells can be classified as. Answer: A, B, O or AB
◉ Almost all healthy people older than 4-6 months of age have naturally
occurring ______ to the ABO ______ they lack. Answer: antibodies,
antigens
◉ If the ABO antigen is present on the cells the corresponding ______
will be absent in the serum. Answer: antibody
◉ If the ABO antibody is present in the serum the corresponding ______
will be absent on the cells. Answer: antigen
◉ ABO Blood Group System. Answer: most significant for transfusion
and transplantation practice due to mutual antibodies being predictably
present in the sera whose RBCs lack the antigen
◉ Monoclonal Antibodies. Answer: derived from culture cell lines,
which have several advantages over conventional human and plant ABO
reagents
, ◉ Major Advantage of Monoclonal Antibodies. Answer: Reproducibility
◉ anti-A reagent is. Answer: BLUE
◉ anti-B reagent is. Answer: YELLOW
◉ anti-A1 and anti-H are. Answer: colorless & used to resolve ABO
discrepancies
◉ Inverse Reciprocal Relationship. Answer: between forward and
reverse type, one serving as a check on the other
◉ Forward Grouping. Answer: testing for an individual's ABO antigens
(unknown antigens) using antisera (known ABO antibodies)
◉ Reverse Grouping. Answer: testing for the presence or absence of
individual ABO antibodies (unknown antibodies) using reagent RBCs
(known antigens)
◉ Percentage of Caucasians/AAs with group O. Answer: 45%, 49%
◉ Percentage of Caucasians/AAs with group A. Answer: 40%, 27%
SOLUTIONS GRADED A+
◉ Human red blood cells can be classified as. Answer: A, B, O or AB
◉ Almost all healthy people older than 4-6 months of age have naturally
occurring ______ to the ABO ______ they lack. Answer: antibodies,
antigens
◉ If the ABO antigen is present on the cells the corresponding ______
will be absent in the serum. Answer: antibody
◉ If the ABO antibody is present in the serum the corresponding ______
will be absent on the cells. Answer: antigen
◉ ABO Blood Group System. Answer: most significant for transfusion
and transplantation practice due to mutual antibodies being predictably
present in the sera whose RBCs lack the antigen
◉ Monoclonal Antibodies. Answer: derived from culture cell lines,
which have several advantages over conventional human and plant ABO
reagents
, ◉ Major Advantage of Monoclonal Antibodies. Answer: Reproducibility
◉ anti-A reagent is. Answer: BLUE
◉ anti-B reagent is. Answer: YELLOW
◉ anti-A1 and anti-H are. Answer: colorless & used to resolve ABO
discrepancies
◉ Inverse Reciprocal Relationship. Answer: between forward and
reverse type, one serving as a check on the other
◉ Forward Grouping. Answer: testing for an individual's ABO antigens
(unknown antigens) using antisera (known ABO antibodies)
◉ Reverse Grouping. Answer: testing for the presence or absence of
individual ABO antibodies (unknown antibodies) using reagent RBCs
(known antigens)
◉ Percentage of Caucasians/AAs with group O. Answer: 45%, 49%
◉ Percentage of Caucasians/AAs with group A. Answer: 40%, 27%
