A person with unknown blood group under ABO system, has suffered much blood loss in an accident and needs immediate blood transfusion. His one friend who has a valid cetificate of his own blood type, offers for blood donation without delay. What would have been the type of blood group of the donor friend?

(1) Type AB

(2) Type O

(3) Type A

(4) Type B

Different blood groups are due to:

1. Specific antigens on the surface of WBCs
2. Specific antibodies on the surface of RBCs
3. Specific antigens on the surface of RBCs
4. Specific type of haemoglobin in RBCs

When the plasma of a person has both anti A and anti B antibodies the blood group of this person would be:

1.  A

2.  B

3.  AB

4.  O

Person with blood group AB is considered as universal recipient because he has

1. Both A and B antigens on RBC but no antibodies in the plasma

2. Both A and B antibodies in the plasma

3. No antigen on RBC and antibody in the plasma

4. Both A and B antigens in the plasma but no antibodies.

Choose the incorrect match with respect to blood components

1. Leucocytes – 6000 - 8000 mm^–3

2. Globulins – Involved in defence mechanisms

3. O^– blood group – Antibodies A and B absent

4. Thrombokinase – Converts prothrombin into thrombin

ABO blood grouping is based on

(1) presence of two soluble antibodies

(2) absence of two surface antigens

(3) presence of two surface antigens

(4) both (2) and (3)

A person with AB blood group:

1. Has A and B antigens in his plasma

2. Lacks any antibodies on RBC surface

3. Can receive blood transfusion from a person of his own group.

4. Can donate blood to all other group recipients

A person can receive blood only from a donor of his/her blood group if the blood group of this person is:

1. O

2. AB

3. A or B

4. A, B, AB or O