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 certificate 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

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?
1. Pheretima
2. Periplaneta
3. Hirudinaria
4. Octopus

A human RBC is placed in 1.5% salt solution. It will
1. swell up
2. shrink
3. remain unaffected
4. burst

All veins carry deoxygenated blood except
1. pulmonary vein
2. hepatic vein
3. hepatic portal vein
4. renal vein

Which one of the following is a matching pair of a certain body feature and its value/count in a normal human adult?
1. Urea - 5-10 mg/100 ml of blood
2. Blood sugar (fasting) - 80-100 mg/100 ml
3. Total blood volume - 3-4 litres
4. ESR in Wintrobe method - 9-15 mm in males and 20-34 mm in females

Continued consumption of a diet rich in butter, red meat and eggs for a long period may lead to:
1. vitamin toxicity
2. kidney stones
3. hypercholesterolemia
4. urine laden with kidney stones

In which one of the following pairs the two items mean one and the same thing?
1. Malleus - anvil
2. SA node - pacemaker
3. Leucocytes - lymphocytes
4. Haemophilia - blood cancer

Thickening of arteries due to cholesterol deposition is: