Match List-I with List-II
| List-I Terms | List-II Features |
|---|---|
| (A) IgE | (I) Formed by yeast |
| (B) IgA | (II) Cellular barrier |
| (C) Hepatitis B vaccine | (III) Antibodies due to allergens. |
| (D) Polymorpho-nuclear leucocytes | (IV) Present in colostrum |
Choose the correct answer from the options given below.
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → (A)-(III), (B)-(IV), (C)-(I), (D)-(II)
(A) IgE — this matches (III) Antibodies due to allergens. Allergy is an exaggerated response of the immune system to substances such as pollen, mites and dust. The antibodies made against these allergens are of the IgE type. They cause mast cells to release histamine and serotonin.
(B) IgA — this matches (IV) Present in colostrum. Colostrum is the yellowish fluid a mother secretes in the first days after birth. It is rich in IgA antibodies, which protect the newborn. This is an example of passive immunity.
(C) Hepatitis B vaccine — this matches (I) Formed by yeast. By recombinant DNA technology, the gene for an antigen of the hepatitis B virus is put into yeast. The yeast makes this antigen in large amounts, and it is used as the vaccine.
(D) Polymorpho-nuclear leucocytes — this matches (II) Cellular barrier. These white blood cells (neutrophils) belong to innate immunity. They engulf and destroy microbes in the blood and tissues, so they form a barrier of cells.