Lab PSC Exam Questions
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Lab PSC Exam Questions - sample questions with answers
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1. Which of the following reactions during blood transfusion is not an immunological reaction?
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Answer: Circulatory overload
Circulatory overload is not an immunological reaction of blood transfusion.
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2. What is the nature of the primary reaction of antigen-antibody interaction?
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Answer: Invisible
The primary reaction of antigen-antibody interaction is invisible.
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3. In which of the following conditions is the bleeding time not prolonged?
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Answer: Hemophilia A
Bleeding time evaluates platelet function and primary hemostasis. Hemophilia A is caused by a deficiency of Factor VIII, which affects secondary hemostasis and prolongs the activated partial thromboplastin time (aPTT), leaving the bleeding time normal. In contrast, conditions like Von Willebrand disease and thrombocytopenia impair primary hemostasis and prolong bleeding time.
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4. What is the normal value for clotting time?
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Answer: 2 - 8 minutes
The normal value for clotting time is 2 - 8 minutes.
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5. Which of the following is the most common blood group among the given options?
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Answer: B-Positive
B-Positive is the most common blood group among the given options.
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6. Which substance is used to neutralize the action of heparin?
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Answer: Protamine
Protamine neutralizes the action of heparin.
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7. Which type of white blood cells contain granules within their cytoplasm?
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Answer: Granulocytes
Granulocytes contain granules within their cytoplasm.
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8. Which are the three subsets of granulocytes?
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Answer: Neutrophils, Eosinophils, and Basophils
The three subsets of granulocytes are neutrophils, eosinophils, and basophils.
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9. From which cell does the formation process of all blood cells begin?
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Answer: Multipotential cell
All blood cell formation begins from a multipotential cell.
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10. Granulocytopoiesis originates from which stem cells?
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Answer: Myeloid stem cells
Granulocytopoiesis originates from myeloid stem cells.
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11. Granulocyte differentiation depends on which of the following?
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Answer: GM-CSF, G-CSF, and IL-3
Granulocyte differentiation depends on GM-CSF, G-CSF, and IL-3.
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12. From which organ of the body does the development process of Granulocytes begin?
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Answer: Bone marrow
The development of granulocytes begins in the bone marrow.
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13. In granulopoiesis, after which stage does the process of mitosis continue to occur?
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Answer: Metamyelocyte
Mitosis continues to occur after the metamyelocyte stage.
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14. What is the process called when cells move toward tissues to carry out phagocytosis?
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Answer: Diapedesis
Diapedesis is the process of movement of cells to tissues to carry out phagocytosis.
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15. In which condition are hypersegmented neutrophils with six or more lobes seen?
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Answer: Vitamin B12 deficiency
Hypersegmented neutrophils with six or more lobes are seen in Vitamin B12 deficiency.
This chapter has 32 questions. Practise them all with timing, answers and explanations.