Tobacco consumption is known to stimulate secretion of adrenaline and noradrenaline. The component causing this could be:

1. Nicotine                                                   
2. Tannic acid
3. Curamin                                             
4. Catechin

Antivenom against snake poison contains
1. antigens                                             
2. antigen-antibody complexes
3. antibodies                                         
4. enzymes

Which of the following is not a lymphoid tissue?

1. Spleen         
2. Tonsils         
3. Pancreas               
4. Thymus

Which of the following glands is large-sized at birth but reduces in size with ageing?
1. Pineal                                 
2. Pituitary
3. Thymus                               
4. Thyroid

Haemozoin is a:

1. precursor of haemoglobin
2. toxin released from Streptococcus infected cells
3. toxin released from Plasmodium infected cells
4. toxin released from Haemophilus infected cells

Which of the following is not the causal organism for ringworm?

1. Microsporum                           
2. Trichophyton
3. Epidermophyton                     
4. Macrosporum

A person with sickle-cell anaemia is

1. more prone to malaria
2. more prone to typhoid
3. less prone to malaria
4. less prone to typhoid

Antibodies present in colostrum, which protect the new born from certain diseases, is of

1. Ig G type                                 
2. Ig A type
3. Ig D type                                 
4. Ig E type

Transplantation of tissues/organs to save certain patients often fails due to rejection of such tissues/organs by the patient. Which type of immune response is responsible for such rejections?

1. Auto-immune response
2. Humoral immune response
3. Physiological immune response
4. Cell-mediated immune response

The substance produced by a cell in viral infection that can protect other cells from further infection is

1. serotonin     
2. colostrum   
3. interferon       
4. histamine