Q. No.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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The principle of immunization or vaccination is based on which property of the immune system?
1. Specificity
2. Memory
3. Ability to recognize self from non-self
4. Cooperation between innate and adaptive immunity
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What type of immunity is used in the treatment of a patient of snakebite?
1. Naturally acquired active immunity
2. Artificially acquired active immunity
3. Artificially acquired passive immunity
4. Naturally acquired passive immunity
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A drug that would not be helpful in the treatment of allergies is:
| 1. | Antibiotics | 2. | Antihistaminics |
| 3. | Steroids | 4. | Adrenaline |
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Rheumatoid arthritis is:
1. X – linked recessive disorder
2. Congenital disorder
3. A viral infection
4. An auto-immune disorder
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| 1. | Bone marrow & Spleen | 2. | Bone marrow & Thyroid |
| 3. | Lymph nosed & Spleen | 4. | Bone marrow & thymus |
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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 |
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Which of the following is not a function of spleen?
| 1. | It acts as a filter of the blood by trapping blood-borne microorganisms |
| 2. | It acts as a large reservoir of RBCs |
| 3. | It filters our old RBCs |
| 4. | It continues to form RBCs for a few years after birth |
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What constitutes about 50% of the lymphoid tissue in the human body?
| 1. | Malt | 2. | Spleen |
| 3. | Lymph nodes | 4. | Liver |
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