- 1(current)
Q. No.Which of the following are the reason(s) for rheumatoid arthritis? Choose the correct option.
| I. | Lymphocytes become more active |
| II. | Body attacks self cells |
| III. | More antibodies are produced in the body |
| IV. | The ability to differentiate pathogens or foreign molecules from self-cells is lost |
1. l and Il
2. II and IV
3. III and IV
4. I and III
Subtopic: Â Allergies & Autoimmunity |
 90%
From NCERT
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| Assertion(A): | Histamine is involved in allergic and inflammatory reactions. |
| Reason(R): | Histamine is a vasodilator. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Â Allergies & Autoimmunity |
 53%
From NCERT
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| Assertion(A): | Organ transplantation patients are given immunosuppressive drugs. |
| Reason(R): | Transplanted tissue has antigens which stimulate the specific immune response of the recipient. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Â Details of Immunity |Â Allergies & Autoimmunity |
 85%
From NCERT
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Assertion(A): Allergens in the environment on reaching human body stimulate mast cells in certain individuals.
Reason(R): Mast cells in human body release excess amount of inflammatory chemicals which cause allergic reactions.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Reason(R): Mast cells in human body release excess amount of inflammatory chemicals which cause allergic reactions.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Subtopic: Â Allergies & Autoimmunity |
 82%
From NCERT
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| Assertion(A): | Blood cells involved in inflammatory reactions are basophils. |
| Reason(R): | Antibodies in our body are complex glycoproteins. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Â Details of Immunity |Â Allergies & Autoimmunity |
 76%
From NCERT
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| Assertion(A): | Sudden sneezing and wheezing are symptoms of allergy to pollen, mites, etc. |
| Reason(R): | Some of us are sensitive to some particles in the environment. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | (A) is false, but (R) is true. |
Subtopic: Â Allergies & Autoimmunity |
From NCERT
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Assertion (A): In recent times, people get a comparatively protected environment early in life than older days.
Reason (R): Children in metro cities suffer from allergies.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason (R): Children in metro cities suffer from allergies.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Â Allergies & Autoimmunity |
 61%
From NCERT
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- 1(current)
Q. No.
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