In malignant tumours, the cells proliferate, grow rapidly and move to other parts of the body to form new tumours. This stage of disease is called:

1. metagenesis 
2. metastasis   
3. teratogenesis     
4. mitosis

When an apparently healthy person is diagnosed as unhealthy by a psychiatrist, the reason could be that
 

Which of the following are the reason(s) for rheumatoid arthritis? Choose the correct option.
 

1. l and Il
2. II and IV
3. III and IV
4. I and III

AIDS is caused by HIV. Among the following, which one is not a mode of transmission of HIV?

1. Transfusion of contaminated blood
2. Sharing the infected needles
3. Shaking hands with infected persons
4. Sexual contact with infected persons

‘Smack’ is a drug obtained from the

1. latex of Papaver somniferum       
2. leaves of Cannabis sativa
3. flowers of Dhatura
4. fruits of Erythroxyl coca

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

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

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

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