Which body defence kills pathogens in food?

  1. Skin
  2. Stomach acid
  3. Mucus in the trachea
  4. Nose hairs
Answer

B) Stomach acid

Hydrochloric acid kills microbes. O Level Biology · Topic 12 Disease and Immunity · 12.1 Disease

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