The haemoglobin of human foetus

• has a lower affinity for oxygen than that of the adult

• its affinity for oxygen is the same as that of an adult

• has only 2 protein subunits instead of 4

• has only 2 protein subunits instead of 4

The most active phagocytic white blood cells.

• neutrophils ane eosinophils

• lymphocytes and macrophages

• eosinophils and lymphocytes

• eosinophils and lymphocytes

During the propagation of a nerve impulse, the action potential results from the movement of 

• K⁺ ions form extracellular fluid of intracellular fluid

• Na⁺ ions from intracellular fluid to extracellular fluid

• K⁺ ions from intracellular fluid to extracellular fluid

• K⁺ ions from intracellular fluid to extracellular fluid

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

• Pushing open of the venous valves

• suction pull

• Stimulation of the sino-auricular node

• Stimulation of the sino-auricular node

Consider the following statements about biomedical technologies

A) During open heart, surgery blood is circulated in the heart -lung machine.

B) Blockage in coronary arteries has removed an angiography.

C) Computerised Axial Tomography (CAT) shows detailed internal structure as seen in a section of the body.

D) X -ray provides clear and detailed images of organs like prostate glands and lungs.

Which two of the above statements are correct? 

• B and D

• C and D

• A and C

• A and C

Which one of the follwing mammalian cells is not capable of metabolising glucose to carbon-dioxide aerobically?

• White blood cells

• Unstriated muscle cells

• Liver cells

• Liver cells

37.

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

• Blood plasma

• Blood serum

• Sample from the thoracic duct or lymphatic system

• Sample from the thoracic duct or lymphatic system

Antibodies in our body are complex

• lipoproteins

• steroids

• prostaglandins

• prostaglandins

Which one of the following has an open circulatory system?

• Pheretima

• Periplaneta

• Hirudinaria

• Hirudinaria

The causative agent of mad-cow disease is a

• bacterium

• prion

• worm

• worm