Give two examples of physical or chemical barriers of defence against pathogens found inhumans.
Skin, mucosal lining, stomach acid
Related Biology GCSE answers
All answers ▸Describe how the small intestine is adapted for efficient glucose absorption. (3 marks)
Describe the process of aerobic respiration.
Explain the similarities and differences between plant and animal cells structure and shape (may include use of a diagram and bullet points are accepted).
How does not completing a course of antibiotics lead to increased immunity within a population of bacteria?