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A molecule that produces an immune response is

  • A.Antigen
  • B.Antibody
  • C.Carcinogen
  • D.Mutagen

Answer: A

Correct answer: Antigen

An antigen is any molecule the immune system recognises as foreign and responds to - typically a protein or polysaccharide on a microbe’s surface. An antibody is the response, not the trigger; carcinogens cause cancer and mutagens damage DNA.

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