The most popularly known blood grouping is the ABO grouping. It is named ABO and not ABC, because 'O' in it refers to having:

1.	other antigens besides A and B on RBCs
2.	over dominance of this type on the genes for A and B types
3.	one antibody only- either anti A or anti-B on the RBCs
4.	no antigens A and B on RBCs

Globulins contained in human blood plasma are primarily involved in:

1. defence mechanisms of body

2. osmotic balance of body fluids

3. oxygen transport in the blood

4. clotting of blood

Which one of the following mammalian cells is not capable of metabolizing glucose to carbon dioxide aerobically?

1. White blood cells

2. Unsatiated muscle cells

3. Liver cells

4. Red blood cells

In humans, blood passes from the post caval to the diastolic right atrium of heart due to:

1. pushing open of the venous valves

2. suction pull

3. stimulation of the sino auricular node

4. pressure difference between the caval and atrium

If you suspect a major deficiency of antibodies in a person, to which of the following would you look for confirmatory evidence?

1. Serum albumins

2. Serum globulins

3. Fibrinogen in the plasma

4. Haemocytes

A drop of each of the following is placed separately on four slides. Which of them will not coagulate?
 

Rh-factor can produce disease:

1. AIDS

2. Turner's syndrome

3. Erythroblastosis foetalis

4. Sickle cell anaemia

If due to some injury the chordae tendineae of the tricuspid valve of the human heart is partially non-functional, what will be the immediate effect?

1. The flow of blood into the aorta will be slowed down

2. The 'pace maker' will stop working

3. The blood will tend to flow back into the left atrium

4. The flow of blood into the pulmonary artery will be reduced