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 ▸What effect does temperature have on enzyme action?
Human body temperature is kept within a narrow range. When the core body temperature is too low, this is detected by the thermoregulatory centre in the brain. Describe how the body responds when a decrease in core body temperature is detected.
What is an enzyme?
Define Photosynthesis