Assertion (A): IgA provides immunity against inhaled and ingested pathogens
Reason (R): IgA is secretory antibody and it is present in the lining of respiratory and intestinal tract.
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: Details of Immunity |
55%
Please attempt this question first.
Hints
Common cold:
| 1. | is caused by a bacterium |
| 2. | affects lungs very early in the disease |
| 3. | is not transmitted by droplets resulting from the cough or sneezes of an infected person |
| 4. | can be transmitted through contaminated objects such as pens, books, cups, doorknobs, computer keyboard or mouse, etc. |
Subtopic: Common Cold & Malaria Introduction |
91%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
The given figure shows the chemical structure of a commonly abused drug. This drug:
| 1. | causes hallucinations in low doses |
| 2. | is derived from the Indian hemp plant |
| 3. | is sometimes clinically used as a pain killer |
| 4. | is a CNS stimulant |
Subtopic: Drugs & Alcohol Abuse |
78%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Symptoms like constipation, abdominal pain and cramps, stools with excess mucous and blood clots are commonly seen in:
| 1. | Amoebic dysentery | 2. | Ascariasis |
| 3. | Typhoid | 4. | Cholera |
Subtopic: Amoebiasis |
82%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
The T-cells:
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: | themselves do not secrete antibodies |
| II: | help B cells to produce antibodies |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Details of Immunity |
91%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
The first form of milk produced by the mammary glands of humans immediately following delivery of the newborn is rich in:
1. IgA antibodies
2. IgG antibodies
3. IgM antibodies
4. IgE antibodies
Subtopic: Active & Passive Immunity |
93%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Opportunistic infections like tuberculosis and toxoplasmosis are seen in HIV positive patients when:
| 1. | The B – lymphocyte counts becomes excessive |
| 2. | The phagocytic cells stop functioning |
| 3. | The T helper cell count gets very low |
| 4. | The body starts making a large number of antibodies against HIV |
Subtopic: AIDS |
94%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
The fungal Genus not responsible for causing ringworm in humans will be:
1. Microsporum
2. Trichophyton
3. Epidermophyton
4. Trichoderma
1. Microsporum
2. Trichophyton
3. Epidermophyton
4. Trichoderma
Subtopic: Fungal Infection & Concept of Immunity |
86%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Which of the following vaccines has been produced by recombinant DNA technology?
1. Oral polio vaccine
2. Bacillus Calmette–Guérin vaccine
3. DPT vaccine
4. Hepatitis B vaccine
Subtopic: Active & Passive Immunity |
85%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
The abuse of anabolic steroids by human males can lead to the development of all the following except:
| 1. | A decrease in the size of prostate gland |
| 2. | depression |
| 3. | decreased sperm production |
| 4. | kidney and liver dysfunction |
Subtopic: Drugs & Alcohol Abuse |
57%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
© 2025 GoodEd Technologies Pvt. Ltd.