The GATE Grind

GATE 2019 BT – Question 20

General Biology · Immunology: Lymphoid organs, innate immunity, inflammation, cytokines, chemokines and the complement system · 1 mark · Multiple choice

Which is NOT part of human nonspecific defence?

  1. Interferon
  2. Mucus
  3. Saliva
  4. Antibody

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Correct answer: (D) Antibody

Explanation

Antibodies bind particular antigens and belong to antigen-specific adaptive immunity. Interferons, mucus barriers and antimicrobial components of saliva participate in innate or nonspecific protection. Thus D is the exception.

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