KROK 1 2019 – Question 13 · KROK (Medicine) · Physiology
ABO blood group is being determined. Erythrocyte agglutination occurred when standard sera of group I and group II were introduced into the blood being analyzed, while group III serum caused no agglutination. What agglutinogens do these erythrocytes have?
- A. A and B
- B. C
- C. D and C
- D. B
- E. A
Hint
Work out which agglutinins each standard serum contains, then decide which red cell antigen would react with exactly the two sera that caused agglutination.
The answer, the explanation and a note on every option are available once you log in. The account is free: topic tests, a mock exam, mistake review and statistics.
More questions on Physiology
- After a certain CNS structure had been destroyed in a test animal, this animal lost its orienting reflexes. What structure had been destroyed?
- An experiment was conducted to measure the skin sensitivity threshold. What patches of skin have the highest sensitivity threshold?
- I.M. Siechenov has proven that a tired limb restores its working capacity faster if during its period of rest another limb works. It became a basis…
- A student, whose educational achievements throughout the semester were poor, feels emotionally tense during the final test. What is the primary…
- What changes can be expected to occur in the isolated heart of a toad, if excessive amount of calcium chloride is introduced into its perfusate?
- Human brain produces endogenous peptides that are similar to morphine and can reduce pain perception. Name these peptides: