The early screening test for HIV infection is :
1. ELISA
2. Western Blot
3. Culture of HIV
4, Detection of opportunistic infections
The major histocompatibility complex is a :
| 1. | Series of complement-enhanced reactions to antigens | 
| 2. | group of antigens, coded by a family of genes, on the surface of body cells | 
| 3. | form of autoimmunity | 
| 4. | the major cause of cancer | 
Which of the following Fungi is not capable of causing ringworm infection in a man?
1. Microsporum
2. Trichophyton
3. Epidermophyton
4. Trichoderma
Opportunistic infections appear in AIDS patients when the HIV has destroyed :
1. Macrophages
2. T cytotoxic cells
3. T helper cells
4. B cells
Proto-oncogenes are seen in :
1. Normal cells
2. Malignant cells
3. Virus infected cells 
4. Cells exposed to X-rays
What is incorrect regarding opioids?
| 1. | Their receptors are in CNS and CVS | 
| 2. | They are generally taken by snorting and injection | 
| 3. | They are CNS depressants | 
| 4. | They can be powerful sedatives and painkillers | 
The principal psychoactive principle present in the hemp plant, Cannabis sativa, is:
1. acetyl salicylic acid
2. diacetylmorphine
3. tetrahydrocannabinol
4. lysergic acid dimethylamide
DNA damage leading to neoplastic transformation can be brought about by ionizing radiations like :
1. UV rays 
2. Gamma rays 
3. Infrared waves
4. Radio waves
The skeletal structure shown in the given diagram shows the structure of :
  
| 1. | Morphine | 2. | Diacetyl morphine | 
| 3. | Cannabinoid | 4. | Cocaine | 
Ringworm in humans can be caused by infection with all the following except:
1. Microsporum
2. Taenia
3. Trichophyton
4. Epidermophyton