Life cycle of RBC is_______________?

Related Mcqs:

1. Biconcave shape of RBC helps by___________________?

   A. Increasing flexibility
   B. Increasing surface area
   C. Carrying more Hemoglobin
   D. Passing easily through smaller capillaries

2. Site of RBC formation in 20 years old healthy male is____________?

   A. Flat bones
   B. Long bones
   C. Liver
   D. Yolk sac

3. Within the RBC hypoxia stimulates glycolysis by which of the following regulating pathways ?

   A. Hypoxia stimulates pyruvate dehydrogenase by increased, 2, 3DPG
   B. Hypoxia inhibits hexokinase
   C. Hypoxia stimulates release of all glycolytic enzymes from Band 3 on RBC membrane
   D. Activation of the regulatory enzymes by high PH

4. The most important buffer in RBC is____________?

   A. O2 Hb +Na hemoglobinate
   B. O2Hb +K hemoglobinate
   C. H2CO3 + KHCO3
   D. H2CO3 +NAHCO3

5. A patient reports with dyspnoea on slight exertion. He also has multiple petechial spots and spontaneous hemorrhage. His RBC count is less than one lakh/mm3 His hematocrit and hemoglobin is low. Most probable diagnosis is______________?

   A. Pernicious anemia
   B. Thalassemia
   C. Aplastic anemia
   D. Sprue

6. Increase in number of RBC is seen in ____________?

   A. Neutropenia
   B. Leukemia
   C. Polycythemia
   D. Anaemia

7. A young patient is hospitalized with petechiae of oral mucous membrane, marginal gingival hemorrhage and with a platelet count of 45,000/ cc The BT and Clot Retraction time are increased, RBC and TLC are normal He is suffering from________________?

   A. Infectious mononucleosis
   B. Thrombocytopenic purpura
   C. Leukemia
   D. Hemophilia

8. In TCA cycle or tricarboxylic acid cycle, which is first formed________________?

   A. Isocitrate
   B. Citrate
   C. Succinate
   D. Fumarate

9. Cardiac cycle duration in man is_______________?

   A. 0.4 seconds
   B. 0.8 seconds
   C. 1.2 seconds
   D. 1.6 seconds

10. Blood supply of ameloblast for most of its life cycle comes form_______________?

    A. Dental papilla
    B. Reduced enamel organ
    C. Dental Sac
    D. Dental pulp