AAB MT REVIEW PAPER Questions with Correct Answers (Grade
A+)
Question 1: What is the most common genotype that could result from the following phenotype?
Anti-D,C Positive Anti-E Negative Anti-c,e Positive
Answer: R1r
Question 2: In which phenotype is there an absence of Rh antigens from the red cell blood cell
membrane?
Answer: Rh null
Question 3: Which statement is INCORRECT regarding naturally occurring antibodies?
Answer: Cross the placenta
Question 4: These statements are true regarding naturally occurring antibodies:
Answer: Usually IgM, react best in saline, react best at 4 degrees C
Question 5: Which of the following antibodies is NOT naturally occurring?
Answer: Anti-K
Question 6: The following antibodies are naturally occurring:
Answer: anti-Le^a, anti-N, and anti-P1
Question 7: Which statement is INCORRECT regarding immune antibodies?
Answer: Most often found in the MNSs system
Question 8: The following statements regarding immune antibodies are correct:
Answer: Mainly IgG, can cross placenta, react best with antiglobulin
Question 9: What is the estimated percentage of patients immunized to the blood group antigens?
Answer: 1%-4%
Question 10: Which other antigen belongs to the MNSs blood group system?
Answer: U
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, Question 11: Anti-N sometimes shows dosage effect. Which cells will it react with most strongly if
showing this effect?
Answer: NN
Question 12: Which antigen is found in plasma and adsorbed onto the red blood cells?
Answer: Le^a
Question 13: Paroxysmal cold hemoglobinuria (PCH) is often associated with which antibody?
Answer: anti-P
Question 14: The antigen Tj^a is a part of which blood group system?
Answer: P
Question 15: An individual inherits the following genes: Lele Sese Hh AB. What soluble antigens will be
secreted in the patient's saliva?
Answer:
1. H
2. A
3. B
4. Le^a
5. Le^b
Question 16: Which one of the following is NOT true of anti-Le^a?
Answer: Causes hemolytic disease of the newborn (HDN)
Question 17: The following are true of anti-Le^a:
Answer: Occurs in Le (a-b-) individuals, is composed mostly of IgM, and is neutralized by Lewis substance
Question 18: Which blood group system antigens are destroyed by enzymes?
Answer: Lutheran
Question 19: All of the following are characteristics of anti-Lu^a EXCEPT which one?
Answer: It causes hemolytic disease of the newborn (HDN)
Question 20: All of the following are characteristics of anti-Lu^a:
Answer: It reacts optimally at room temperature, it causes mixed field reactions, and it reacts well in saline
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A+)
Question 1: What is the most common genotype that could result from the following phenotype?
Anti-D,C Positive Anti-E Negative Anti-c,e Positive
Answer: R1r
Question 2: In which phenotype is there an absence of Rh antigens from the red cell blood cell
membrane?
Answer: Rh null
Question 3: Which statement is INCORRECT regarding naturally occurring antibodies?
Answer: Cross the placenta
Question 4: These statements are true regarding naturally occurring antibodies:
Answer: Usually IgM, react best in saline, react best at 4 degrees C
Question 5: Which of the following antibodies is NOT naturally occurring?
Answer: Anti-K
Question 6: The following antibodies are naturally occurring:
Answer: anti-Le^a, anti-N, and anti-P1
Question 7: Which statement is INCORRECT regarding immune antibodies?
Answer: Most often found in the MNSs system
Question 8: The following statements regarding immune antibodies are correct:
Answer: Mainly IgG, can cross placenta, react best with antiglobulin
Question 9: What is the estimated percentage of patients immunized to the blood group antigens?
Answer: 1%-4%
Question 10: Which other antigen belongs to the MNSs blood group system?
Answer: U
Page 1
, Question 11: Anti-N sometimes shows dosage effect. Which cells will it react with most strongly if
showing this effect?
Answer: NN
Question 12: Which antigen is found in plasma and adsorbed onto the red blood cells?
Answer: Le^a
Question 13: Paroxysmal cold hemoglobinuria (PCH) is often associated with which antibody?
Answer: anti-P
Question 14: The antigen Tj^a is a part of which blood group system?
Answer: P
Question 15: An individual inherits the following genes: Lele Sese Hh AB. What soluble antigens will be
secreted in the patient's saliva?
Answer:
1. H
2. A
3. B
4. Le^a
5. Le^b
Question 16: Which one of the following is NOT true of anti-Le^a?
Answer: Causes hemolytic disease of the newborn (HDN)
Question 17: The following are true of anti-Le^a:
Answer: Occurs in Le (a-b-) individuals, is composed mostly of IgM, and is neutralized by Lewis substance
Question 18: Which blood group system antigens are destroyed by enzymes?
Answer: Lutheran
Question 19: All of the following are characteristics of anti-Lu^a EXCEPT which one?
Answer: It causes hemolytic disease of the newborn (HDN)
Question 20: All of the following are characteristics of anti-Lu^a:
Answer: It reacts optimally at room temperature, it causes mixed field reactions, and it reacts well in saline
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