Easy Questions (40) - Biology Quiz

**Easy Questions (40)** 1. What is the primary function of red blood cells (RBCs)? - Transport oxygen throughout the body - Defend against infections - Clot blood - Produce hormones 2. What is the lifespan of a normal RBC in human circulation? - 120 days - 60 days - 90 days...

**Easy Questions (40)** 1. What is the primary function of red blood cells (RBCs)? - Transport oxygen throughout the body - Defend against infections - Clot blood - Produce hormones 2. What is the lifespan of a normal RBC in human circulation? - 120 days - 60 days - 90 days - 30 days 3. Which white blood cells are responsible for combating bacterial infections? - Neutrophils - Eosinophils - Basophils - Lymphocytes 4. What is the normal range of hemoglobin for adult females? - 12-16 g/dL - 8-10 g/dL - 10-14 g/dL - 14-18 g/dL 5. Which method is commonly used for hemoglobin estimation in the laboratory? - Cyanmethemoglobin method - ELISA - Coombs test - Western blot 6. What are platelets primarily responsible for? - Blood clotting - Oxygen transport - Immune response - Metabolic regulation 7. Which cell is the largest of the white blood cells? - Monocytes - Neutrophils - Lymphocytes - Basophils 8. What is the normal range for total leukocyte count (TLC) in adults? - 4,000 to 11,000 cells/mm³ - 2,000 to 5,000 cells/mm³ - 12,000 to 20,000 cells/mm³ - 1,000 to 3,000 cells/mm³ 9. What does ESR (Erythrocyte Sedimentation Rate) measure? - Inflammation in the body - Blood sugar levels - Oxygen saturation - Platelet function 10. Which of the following tests determines the percentage of RBCs in blood? - Hematocrit - Coombs test - Prothrombin time - D-dimer test