Nucleic acid in HIV:
1. ss RNA
2. ds RNA
3. ss DNA
4. ds DNA
Typhoid caused by:
1.  Rickettsiae
2.  Chlamydia
3.  Salmonella typhi
4.  Mycobacterium
Histamine is secreted by:
| 1. | Mast cells | 2. | Fibroblast | 
| 3. | Histiocytes | 4. | Plasma cells | 
HIV infects:
1.  RBC
2.  T – helper cells
3.  B - cells
4.  Basophils
During injury, mast cells secrete:
1.  Histamine
2.  Heparin
3.  Prothrombin
4.  Antibodies
What is a vaccine:
1.  Treated bacteria, virus & protein
2.  Treated algae
3.  Treated fungi
4.  Treated plasmodium
During viral infection, the protein formed in host cells to resist is:
1. Interferons
2. Antitoxin
3. Antibody
4. Histone
What is true for monoclonal antibodies?
 
| 1. | These are obtained from one parent and for one antigen | 
| 2. | These are obtained from different parents and for one antigen | 
| 3. | These are obtained from one parent and for many antigens | 
| 4. | These are obtained from many parents and for many antigens | 
Which fish selectively feed on larvae of mosquitoes?
| 1. | Gambusia | 2. | Rohu | 
| 3. | Clarias | 4. | Exocoetus | 
Which one of the following is the correct match
1.  Reserpine – Tranquilliser
2.  Cocaine – opiotic narcotic
3.  Morphine – Hallucinogenic
4.  Bhang – Analgesic