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neet BIOLOGYEasy

Match List-I with List-II

List-I (A) Cytokine barriers (B) Cellular barriers (C) Physiological barriers (D) Physical barriers

List-II (I) Mucus coating of respiratory tract (II) Interferons (III) Neutrophils and Macrophages (IV) Tears and Saliva

A

(A)-(II), (B)-(III), (C)-(IV), (D)-(I)

B

(A)-(III), (B)-(I), (C)-(IV), (D)-(II)

C

(A)-(III), (B)-(I), (C)-(II), (D)-(IV)

D

(A)-(II), (B)-(III), (C)-(I), (D)-(IV)

Step-by-Step Solution

  • Cytokine barriers (A) involve proteins called Interferons (II) secreted by virus-infected cells to protect non-infected cells
  • Cellular barriers (B) include leukocytes like PMNL-neutrophils and macrophages (III) which phagocytose microbes
  • Physiological barriers (C) include acid in the stomach, saliva in the mouth, and tears from eyes (IV) that prevent microbial growth
  • Physical barriers (D) include the skin and mucus coating of the respiratory, gastrointestinal, and urogenital tracts (I) that trap microbes
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