Mast cells secrete:

1. hippurin 

2. myoglobin 

3. histamine 

4. Haemoglobin 

Subtopic:  Allergies & Autoimmunity |
 95%
From NCERT
NEET - 2006
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Allergies could be because of

1.    Protected environment provided in early life

2.    Modern day lifestyle

3.   More sensitivity to the environment

4.   All of these

Subtopic:  Allergies & Autoimmunity |
 93%
From NCERT
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Increased asthmatic attacks in certain seasons are related to :

1. hot and humid environment 

2. eating fruits preserved in tin containers

3. inhalation of seasonal pollen

4. low temperature

Subtopic:  Allergies & Autoimmunity |
 90%
From NCERT
NEET - 2007
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The class of antibodies involved in the allergic reaction is:
1. Ig A
2. Ig D
3. Ig E
4. Ig G

Subtopic:  Allergies & Autoimmunity |
 88%
From NCERT
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Read the following statements:

(i) The main antibody produced as a result of allergic reaction is lgA.

(ii) Modern-day lifestyle has resulted in lowering immunity and more sensitivity to allergens.

(iii) Recombinant DNA technology has allowed the production of antigenic polypeptides of pathogens in bacteria or yeasts.

(iv) Allergy is suppressed due to the release of histamine and serotonin.

(v) The drugs like anti-histamines, adrenaline, and steroids quickly reduce the symptoms of allergy.

Which of the above statements are incorrect?

1. (ii), (iii), (v)

2. (i), (iv)

3. (ii), (v)

4. (ii), (iii)

Subtopic:  Allergies & Autoimmunity |
 82%
From NCERT
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In higher vertebrates, the immune system can distinguish self-cells and non-self. If this property is lost due to genetic abnormality and it attacks self-cells, then it leads to 
1. graft rejection 
2. auto-immune disease 
3. activate immunity 
4. allergic response 

Subtopic:  Allergies & Autoimmunity |
 87%
From NCERT
NEET - 2016
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Consider the following four statements(1-4) regarding kidney transplant and select the two correct ones out of these.

(1) Even if a kidney transplant is proper the recipient may need to take immuno-suppresants for a long time
(2) The cell-mediated immune response is responsible for the graft rejection
(3) The B-lymphocytes are responsible for rejection of the graft
(4) The acceptance of rejection of a kidney transplant depends on specific interferons

The two correct statements are

1. (2) and (3) 
2. (3) and (4)
3. (1) and (3) 
4. (1) and (2)

Subtopic:  Allergies & Autoimmunity |
 87%
From NCERT
NEET - 2010
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The cause of autoimmunity can be

1.    Physical appearance

2.    Genetic reasons

3.   Reasons, which are still under research

4.   Both 2 and 3

Subtopic:  Allergies & Autoimmunity |
 82%
From NCERT
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Asthma may be attributed to :  
1. accumulation of fluid in the lungs
2. bacterial infection of the lungs
3. allergic reaction of the mast cells in the lungs
4. inflammation of the trachea

Subtopic:  Allergies & Autoimmunity |
 79%
From NCERT
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Which of the following statements is not correct about allergies?

1 Allergic tendency can be genetically passed on from parent to child 

2 It is characterised by presence of large titre of lgE antibodies

3 Allergic response involves mast cells and basophils

4 Children living in metro cities are less sensitive to the allergens present in the environment

 

Subtopic:  Allergies & Autoimmunity |
 66%
From NCERT
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