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Q. No.Transmission of HIV infection can generally occur by:
I:
sexual contact with infected person
II:
mere touch or physical contact
III:
transfusion of contaminated blood and blood products
1. Only I and II
2. Only I and III
3. Only II and III
4. I, II and III
Subtopic: AIDS |
93%
From NCERT
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The spleen:
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
| I: | mainly contains lymphocytes and phagocytes. |
| II: | acts as a filter of the blood by trapping blood-borne micro-organisms. |
| III: | has a large reservoir of erythrocytes |
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic: Human Immune System |
74%
From NCERT
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A person suffering from pneumonia is least likely to show/complain:
| 1. | A rapid respiratory rate | 2. | High grade fever |
| 3. | Chest pain | 4. | Pain abdomen |
Subtopic: Pneumonia & Related Questions |
57%
From NCERT
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Histamine in human body is secreted by:
1. Basophils and Mast cells
2. Mast cells and Macrophages
3. Macrophages and NK cells
4. Acidophils and Neutrophils
1. Basophils and Mast cells
2. Mast cells and Macrophages
3. Macrophages and NK cells
4. Acidophils and Neutrophils
Subtopic: Allergies & Autoimmunity |
84%
From NCERT
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Where is the antigen binding site present in an antibody molecule?
| 1. | between the two light chains |
| 2. | between the two heavy chains |
| 3. | between the light and the heavy chains |
| 4. | at the very end of the antibody molecules [at their C terminus] |
Subtopic: Human Immune System |
79%
From NCERT
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T lymphocytes:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | do not secrete antibodies |
| II: | are responsible for graft rejection in organ transplant procedures. |
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Human Immune System |
78%
From NCERT
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A highly effective vaccine is available to prevent all the following infections except:
1. HIV
2. Tuberculosis
3. Polio
4. Tetanus
1. HIV
2. Tuberculosis
3. Polio
4. Tetanus
Subtopic: AIDS |
94%
From NCERT
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The use of all the following drugs quickly reduce the symptoms of allergy except:
1. anti-histamines
2 adrenalin
3. steroids
4. antibiotics
1. anti-histamines
2 adrenalin
3. steroids
4. antibiotics
Subtopic: Allergies & Autoimmunity |
77%
From NCERT
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There is always a time-lag between the infection and appearance of AIDS symptoms. This period may vary from:
1. 7 to 14 days
2. two weeks to four weeks
3. one month to three months
4. a few months to many years (usually 5-10 years).
1. 7 to 14 days
2. two weeks to four weeks
3. one month to three months
4. a few months to many years (usually 5-10 years).
Subtopic: AIDS |
97%
From NCERT
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The spread of cancer cells from the original (primary) tumor to other parts of the body, forming new (secondary) tumors, is called as:
| 1. | Apoptosis | 2. | Contact inhibition |
| 3. | Metastasis | 4. | Transformation |
Subtopic: Cancer |
97%
From NCERT
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