Which of the following is not a characteristic of HIV?
1. | It mutates rapidly developing new strains. |
2. | It is a retrovirus with two short strands of ss RNA. |
3. | It cannot pass through blood-brain barrier. |
4. | It has the unique ability to destroy helper T cells. |
Exposure of the DNA to non-ionizing radiation, the UV rays, leads to the formation of:
1. | unusual base analogues in the template |
2. | A-G, T-C substitutions |
3. | deletions of short arms of chromosomes |
4. | thymine dimmers |
Interleukin -2 and alpha interferon are showing promise in the treatment of cancers. They are:
1. | Immunostimulants | 2. | Phagocytes |
3. | Chemotherapeutic agents | 4. | Radiotherapeutic agents |
Artemisinin is a drug that is now a worldwide standard treatment of:
1. | Rheumatoid arthritis | 2. | Lung cancer |
3. | Malaria | 4. | Plague |
Complement triggers all the following immune functions except:
1. | Phagocytosis | 2. | Inflammation |
3. | Membrane attack | 4. | Anamnestic response |
Antigen presentation is a process by which the innate immune system:
1. | Recruits immune cells to sites of infection |
2. | Activates the complement cascade |
3. | Activates the adaptive immune system |
4. | Acts as a physical and chemical barrier to infectious agents |
Pneumocystis jiroveci is a fungus that causes:
1. | Athlete’s foot in sportspersons |
2. | Pneumoconiosis in farmers |
3. | Liver infections in chronic alcoholics |
4. | Pneumonia in immune-compromised persons |
Consider the given two statements:
I: | The malarial parasite is relatively protected from attack by the body's immune system. |
II: | The parasite is enveloped in a protective protein and lipopolysaccharide layer. |
1. Both I and II are correct and II explains I.
2. Both I and II are correct but II does not explain I.
3. I is correct and II is incorrect.
4. Both I and II are incorrect.
Identify the incorrect statement about amphetamines:
1. | Amphetamines are synthetic drugs, structurally similar to adrenaline. |
2. | They are used to treat morbid obesity and narcolepsy. |
3. | They are frequently called “superman” drugs. |
4. | They are CNS depressants. |
The persistent conviction that one is or is likely to become ill, often involving symptoms when illness is neither present nor likely, and persisting despite reassurance and medical evidence to the contrary, is called as:
1. | Hypochondria | 2. | Neurasthenia |
3. | Phobia | 4. | Anxiety neurosis |