Q. No.Aedes aegypti is not a vector for:
1.
Dengue
2.
Chikungunya
3.
Japanese encephalitis
4.
Yellow fever
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Which of the following is also sometimes called as mosquito fish?
| 1. | Bombay duck | 2. | Gambusia |
| 3. | Pacific salmon | 4. | Pomfret |
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What is incorrect regarding innate immunity?
| 1. | It is present at the time of birth |
| 2. | Physiological barriers prevent microbial growth |
| 3. | Natural killers, a cellular barrier, are a type of monocyte |
| 4. | It is a non-specific type of defense |
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Interferons are secreted by:
| 1. | Single stranded viruses | 2. | Double stranded viruses |
| 3. | Bacteria infected cells | 4. | Virus infected cells |
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Anamnestic response in acquired immunity is due to the fact that it is:
| 1. | characterized by memory | 2. | pathogen specific |
| 3. | huge in magnitude | 4. | due to lymphocytes |
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B cells:
| 1. | Do not produce antibodies but help T cells produce them |
| 2. | Are pathogen specific but do not retain the memory of previous encounters |
| 3. | Lack ability to distinguish between self and non-self |
| 4. | Are involved in humoral immune response |
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Graft rejection is due to:
1. Innate immune response
2. Humoral immune response
3. Cell-mediated immune response
4. Auto-immune response
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In an antibody molecule, an antigen binding site is located:
1. In the constant portion
2. At the C – terminus of a heavy chain
3. Between a light and a heavy chain
4. Between two heavy chains
Active immunity develops when:
| 1. | A host is exposed to antigens |
| 2. | Antigen presenting cells first encounter the antigen |
| 3. | T helper cells activate B cells to produce antibodies |
| 4. | When a child gets vaccinated for the first time |
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A foetus receiving some antibodies from mother through placenta is an example of:
| 1. | Naturally acquired active immunity |
| 2. | Artificially acquired active immunity |
| 3. | Artificially acquired passive immunity |
| 4. | Naturally acquired passive immunity |
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