All the following diseases of mankind are vector-borne except:
| 1. | Dengue | 2. | Chikungunya |
| 3. | Ascariasis | 4. | Filariasis |
Consider the following statements:
| I: | Innate immunity is a non-specific type of defense that is present at the time of birth. |
| II: | Acquired immunity is pathogen-specific and is characterized by memory. |
| III: | Memory-based acquired immunity developed in higher vertebrates based on the ability to distinguish self from non-self. |
Which of the above statements are true?
| 1. | I and II only | 2. | I and III only |
| 3. | II and III only | 4. | I, II and III |
Consider the following statements:
| I: | Plasmodium falciparum causes malignant tertian malaria. |
| II: | Release of hemosiderin from burst RBCs is responsible for paroxysms of malarial attacks. |
| III: | Sporozoites are the infectious forms of Plasmodium. |
Which of the above statements are true?
| 1. | I and II only | 2. | I and III only |
| 3. | II and III only | 4. | I, II, and III |
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 |
Rhinovirus does not affect:
| 1. | Lungs | 2. | Nose |
| 3. | Pharynx | 4. | Larynx |
The mechanical carrier of the causative agent of amoebic dysentery is:
| 1. | A protozoan | 2. | House fly |
| 3. | Mosquito | 4. | Rodent |
Aedes aegypti is not a vector for:
| 1. | Dengue | 2. | Chikungunya |
| 3. | Japanese encephalitis | 4. | Yellow fever |
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 |