CUET Preparation Today
Match List-I with List-II
Choose the correct answer from the options given below. |
(A)-(III), (B)-(IV), (C)-(II), (D)-(I) (A)-(I), (B)-(II), (C)-(III), (D)-(IV) (A)-(I), (B)-(II), (C)-(IV), (D)-(III) (A)-(III), (B)-(IV), (C)-(I), (D)-(II) |
(A)-(III), (B)-(IV), (C)-(I), (D)-(II) |
The correct answer is Option (4) → (A)-(III), (B)-(IV), (C)-(I), (D)-(II)
A. The exaggerated response of the immune system to certain antigens present in the environment is called allergy. The substances to which such an immune response is produced are called allergens. The antibodies produced to these are of IgE type. B. When ready-made antibodies are directly given to protect the body against foreign agents, it is called passive immunity. The yellowish fluid colostrum secreted by mother during the initial days of lactation has abundant antibodies (IgA) to protect the infant. The foetus also receives some antibodies from their mother, through the placenta during pregnancy. These are some examples of passive immunity. C. The Hepatitis B vaccine that is formed by yeast is a recombinant DNA vaccine. It is one of the first genetically engineered vaccines and is commonly produced using yeast cells, typically Saccharomyces cerevisiae. D. Cellular barriers : Certain types of leukocytes (WBC) of our body like polymorpho-nuclear leukocytes (PMNL-neutrophils) and monocytes and natural killer (type of lymphocytes) in the blood as well as macrophages in tissues can phagocytose and destroy microbes. |
