Interferons are secreted by:
| 1. | Single stranded viruses | 2. | Double stranded viruses |
| 3. | Bacteria infected cells | 4. | Virus infected cells |
Secondary lymphoid organs:
| 1. | Are those where immature lymphocytes differentiate |
| 2. | Provide a site of interaction between lymphocytes and antigens |
| 3. | Are formed after birth |
| 4. | Are bone marrow and MALT |
Small masses of lymphatic tissue found throughout the ileum region of the small intestine are called:
| 1. | Paneth cells | 2. | Meissener’s Plexus |
| 3. | Peyer’s patches | 4. | Entero-chromaffin cells |
Steroid abuse in males does not cause:
1. Decrease in size of the prostate
2. Acne
3. Breast enlargement
4. Reduction of testicle size
Aedes aegypti is not a vector for:
| 1. | Dengue | 2. | Chikungunya |
| 3. | Japanese encephalitis | 4. | Yellow fever |
The mechanical carrier of the causative agent of amoebic dysentery is:
| 1. | A protozoan | 2. | House fly |
| 3. | Mosquito | 4. | Rodent |
Rhinovirus does not affect:
| 1. | Lungs | 2. | Nose |
| 3. | Pharynx | 4. | Larynx |
Which of the following are the reason(s) for Rheumatoid arthritis? Choose the correct option.
| i: | The ability to differentiate pathogens or foreign molecules from self-cells increases. |
| ii: | Body attacks self cells. |
| iii: | More antibodies are produced in the body. |
| iv: | The ability to differentiate pathogens or foreign molecules from self-cells is lost. |
| 1. | i and ii | 2. | ii and iv |
| 3. | iii and iv | 4. | i and iii |
Identify the incorrectly matched pair regarding Plasmodium, the protozoan responsible for causing malaria in humans:
|
1. |
Cause of malignant tertian malaria |
Plasmodium falciparum |
|
2. |
Paroxysm [clinical features] of malaria |
Release of hemozoin on rupture of RBCs |
|
3. |
Fertilization during the life cycle |
Gut of female anopheles |
|
4. |
Infective stage to mankind |
Trophozoites |