Antigens are

  1. proteins made by lymphocytes
  2. molecules on pathogens with specific shapes
  3. white blood cells
  4. drugs that kill bacteria
Answer

B) molecules on pathogens with specific shapes

Antigens trigger antibody production. O Level Biology · Topic 12 Disease and Immunity · 12.3 Immunity

Biology MCQ · More O Level Biology: Disease and Immunity MCQs · Practise