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Q. No.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
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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Which of the following is least likely to directly cause cancer?
1. X-rays
2. Gamma rays
3. UV rays
4. Infra-red rays
1. X-rays
2. Gamma rays
3. UV rays
4. Infra-red rays
Subtopic: Cancer |
72%
From NCERT
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Which diagnostic technique uses X-rays and computer technology to create detailed cross-sectional images of the body?
| 1. | CT Scan | 2. | Ultra Sound |
| 3. | MRI | 4. | Fibre optic endoscopy |
Subtopic: Cancer |
81%
From NCERT
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Cannabinoids:
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: | are derived from Cannabis sativa |
| II: | are CNS stimulant and strong pain killers |
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: Drugs & Alcohol Abuse |
76%
From NCERT
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