Consider the given two statements:
I: | The acquired immune response is called "adaptive". |
II: | In acquired immunity, pathogen-specific receptors are "acquired" during the lifetime of the organism. |
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 regarding Entamoeba histolytica:
1. | Cysts of Entamoeba can survive for up to a month in soil or for up to 45 minutes under fingernails. |
2. | Invasion of the intestinal lining results in bloody diarrhea. |
3. | Infection remains confined to the gastrointestinal tract. |
4. | Infections can sometimes last for years if there is no treatment. |
The occurrence of chills and fever in malaria is associated with:
1. | Rupture of hepatocytes during exo-erythrocytic cycle of the parasite |
2. | Inoculation of the sporozoite by the mosquito bite into humans |
3. | Release of haemozoin due to rupture of RBCs by the parasite |
4. | Development of the adult trophozoite in the RBC |
All the following diseases can be caused by a bacterial infection except:
1. | Dysentery | 2. | Diphtheria |
3. | Plague | 4. | African sleeping sickness |
The name Mary Mallon is associated with:
1. | Tuberculosis | 2. | Typhoid |
3. | Leprosy | 4. | Rabies |
Ringworm is not caused by:
1. | Trichoderma | 2. | Microsporum |
3. | Trichophyton | 4. | Epidermophyton |
Which of the following cells can phagocytose microbes only in tissues?
1. | Neutrophil | 2. | Natural killer cells |
3. | Macrophages | 4. | Monocytes |
Interferons are secreted by:
1. | Virus infected cells | 2. | The viruses themselves |
3. | Natural killer cells | 4. | T helper cells |
What word correctly denotes an enhanced reaction of the body's immune system to an antigen which is related to one previously encountered?
1. | Booster | 2. | Primary |
3. | Anamnestic | 4. | Magnified |
Identify the incorrect statement regarding the cell-mediated immune response:
1. | It is mediated through the T lymphocytes |
2. | A large number of antibodies are secreted by activated T cytotoxic cells |
3. | It responds against cancer cells and viral infections |
4. | It is responsible for graft rejection |