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
Primary lymphatic organs serve as the site for:
| 1. | antibody formation | 
| 2. | lymph formation | 
| 3. | lymphocytes to encounter and bind to antigens | 
| 4. | lymphocyte formation and maturation | 
AIDS is characterized by the presence of:
| 1. | Nosocomial infections | 
| 2. | Iatrogenic infections | 
| 3. | Opportunistic infections | 
| 4. | Subclinical infections | 
The receptors for the drug shown below are located in :

1. CNS and CVS
2. CVS and GIT
3. CNS and GIT
4. CNS and PNS
Study the diagram given and choose the correct statement :

1. A : retrovirus replicates outside the cell
2. B : viral DNA is produced by the host Reverse transcriptase
3. C : viral DNA incorporates into the host genome
4. D : New viral DNA is produced by the infected cell