What cells remove the old, damaged, or defective erythrocytes from the blood?
1. NK cells.
2. Dendritic cells.
3. macrophages.
4. monocytes.

All the following statements regarding coagulation of blood are correct except:
1. Prothrombinase catalyzes the breakdown of prothrombin to thrombin.
2. Thrombin catalyzes the conversion of fibrinogen to fibrin.
3. Antithrombin inactivates thrombin.
4. Heparin causes fibrinolysis.

Identify a very important thrombolytic amongst the following:
1. warfarin
2. heparin
3. oxalates and citrates
4. t-PA

Which of these statements about the ABO blood group is NOT true?

The agglutinogens [antigens] and the agglutinins [antibodies] for the ABO blood group are found respectively:
1. on the erythrocytes, on the leukocytes
2. on the erythrocytes, in the plasma
3. on the leukocytes, in the plasma
4. in the plasma, on the erythrocytes

What is true regarding blood transfusion and compatibility?
1. A-negative blood can probably be safely donated to a person with A-positive blood.
2. Antibodies against the Rh antigen do not develop unless an Rh-positive person is exposed to Rh-negative blood.
3. The largest percentage of people in India are Rh-negative.
4. Rh-negative mothers cannot have an Rh-positive baby.

The colloid osmotic pressure in the blood is mainly due to:
1. albumin
2. glucose
3. RBCs
4. globulins

Erythropoeisis does not normally require:
1. folic acid
2. vitamin K
3. iron
4. vitamin B12

All the following anticoagulants are found in the blood except:
1. ethylenediamenetetraacetic acid (EDTA).
2. antithrombin
3. heparin
4. prostacyclin

RhoGAM injection [one brand of Rh immunoglobulin] is given to Rh-negative mothers to:
1. initiate the synthesis of anti-Rh antibodies in the mother.
2. initiate anti-Rh antibody production in the fetus.
3. prevent the mother from producing anti-Rh antibodies.
4. prevent the fetus from producing anti-Rh antibodies.