The most important buffer in RBC is____________?

Related Mcqs:

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

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

2. 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

3. Biconcave shape of RBC helps by___________________?

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

4. Life cycle of RBC is_______________?

   A. 12 days
   B. 90 days
   C. 120 days
   D. One month

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. Hemoglobin is the major buffer in blood, bicarbonate ions diffuse out of erythrocyte into plasma in exchange of_______________?

   A. Potassium
   B. Phosphate
   C. Carbonic acid
   D. Chloride ion

9. The major driving force for formation of membrane lipid bilayer is____________?

   A. Hydrogen bonding
   B. Hydrophobic interactions
   C. Vander wall forces
   D. Not known

10. An essential for the conversion of glucose to glycogen in liver is____________?

    A. UTP
    B. GTP
    C. Pyruvate Kinase
    D. Guanosine