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

'Bundle of His' is a part of which one of the following organs in humans?

1. Heart

2. Kidney

3. Pancreas

4. Brain

Which one of the following mammalian cells is not capable of metabolising glucose to

carbon-dioxide aerobically?

Examination of blood of a person suspected of having anaemia, shows large, immature,

nucleated erythrocytes without haemoglobin. Supplementing his diet with which of the

following, is likely to alleviate his symptoms?

1. Thiamine

2. Folic acid and cobalamine

3. Riboflavin

4. Iron compounds

Which one of the following has an open circulatory system?

In the foetus, the ductus arteriosus connects the

1. pulmonary vein with pulmonary artery

2. pulmonary artery with aorta

3. pulmonary vein with aorta

4. pulmonary artery with vena cava

Which of the following is known as Christmas factor?

Erythrocyte maturing factor is

A human RBC is placed in 1.5% salt solution. It will

All veins carry deoxygenated blood except