BPSC CCE Prelims
Circulatory System Previous Year Questions (PYQs)
Practice solved questions for Circulatory System with detailed step-by-step solutions, key insights, and trend analysis for BPSC CCE PRELIMS.
Solved Previous Year Questions
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Blood group of an individual is determined by
Detailed Explanation:
Blood group is determined by specific antigens present on the surface of red blood cells (RBCs), not by haemoglobin, WBC/RBC combination, or RBC shape.
The ABO system uses A and B antigens (Type A has A antigen, Type B has B antigen, Type AB has both, Type O has neither), while the Rh system uses the D antigen (present = Rh-positive, absent = Rh-negative).
Haemoglobin carries oxygen and does not determine blood group; WBC/RBC combination refers to cell counts, not blood typing; RBC shape is related to disorders like sickle cell anemia, not blood group determination.
Which of the following is the fluid part of the blood?
Detailed Explanation:
Plasma is the fluid (liquid) part of blood, making up about 55% of total blood volume.
RBCs, WBCs, and platelets are cellular (solid) components suspended in plasma.
The most important cell type associated with the immunity of the body is
Detailed Explanation:
Lymphocytes are the most important cell type for body immunity.
Red Blood Cells (RBCs) transport oxygen, platelets aid in blood clotting, while lymphocytes (a type of White Blood Cell) produce antibodies and destroy pathogens, forming the core of the adaptive immune system.
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in transfusion, blood must be compatible not only in blood type but also in
Detailed Explanation:
Blood transfusion compatibility requires matching both ABO blood type and Rh factor to prevent immune reactions and hemolysis.
The Rh factor (Rh+ or Rh−) is a critical antigen on red blood cells; mismatched transfusion can trigger severe immune responses, especially in Rh-negative recipients receiving Rh-positive blood.
White cell count, red cell count, and donor race are not compatibility determinants for transfusion safety.
Therefore, Rh factor compatibility is essential, making Option 1 the correct answer.
The universal acceptor blood group is
Detailed Explanation:
AB blood group individuals possess both A and B antigens on their red blood cells but have no anti-A or anti-B antibodies in their plasma, allowing them to receive blood from all ABO groups without immune rejection.
O blood group is the universal donor (lacks A/B antigens), while A and B groups have specific antibodies that would attack incompatible blood types.
Therefore, AB can accept blood from all groups, making Option 3 the correct answer.
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