| 1. | B-lymphocytes | 2. | leucocytes | 
| 3. | helper T-lymphocytes | 4. | thrombocytes | 
The active form of Entamoeba histolytica feeds upon:
Which is the particular type of drug that is obtained from the plants whose one flowering branch is shown below? 
      
| 1. | Hallucinogen | 2. | Depressant | 
| 3. | Stimulant | 4. | Pain-Killer | 
Motile zygote of Plasmodium occurs in:
| 1. | Gut of female Anopheles | 
| 2. | Salivary glands of Anopheles | 
| 3. | Human RBCs | 
| 4. | Human liver | 
Widal test is carried out to test:
| 1. | Malaria | 2. | Diabetes mellitus | 
| 3. | HIV/AIDS | 4. | typhoid fever | 
Common cold differs from pneumonia in, that:
| 1. | Pneumonia is a communicable disease, whereas common cold is a nutritional deficiency disease | 
| 2. | Pneumonia can be prevented by a live attenuated bacterial vaccine, whereas the common cold has no effective vaccine | 
| 3. | Common cold is caused by a virus, while Pneumonia is caused by a bacterium. | 
| 4. | Pneumonia pathogen infects alveoli whereas common cold affects the nose and the respiratory passage but not the lungs | 
Which one of the following is not a property of cancerous cells, whereas the remaining three are?
| 1. | They compete with normal cells for vital nutrients | 
| 2. | They do not remain confined in the area of formation | 
| 3. | They divide in an uncontrolled manner | 
| 4. | They show contact inhibition | 
In which one of the following options the two examples are correctly matched with their particular type of immunity?
| Examples | Type of immunity  | 
		|
| (a) | Polymorphonuclear leukocytes and monocytes | Cellular barriers | 
| (b) | Anti-tetanus and anti-snake bite injection | Active immunity | 
| (c) | Saliva in mouth and tears in eyes | Physical barriers | 
| (d) | Mucus coating of the epithelium lining the urinogenital tract and HCl in the stomach | Physiological barriers |