Q. No.A common cause of pneumonia in humans is:
1.
Streptococcus pyogenes
2.
Hemophilusinfluenzae
3.
Staphylococcus aureus
4.
Rotavirus
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The mechanical carrier of the causative agent of amoebic dysentery is:
| 1. | A protozoan | 2. | House fly |
| 3. | Mosquito | 4. | Rodent |
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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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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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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
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