3rd line of defence

Question 1

Specific defences

Answer 1

protect against specific pathogens

Question 2

antibody

Answer 2

a protein produced by the immune system to tag + destroy invasive microbes

Question 3

antibiotic

Answer 3

various chemicals produced by certain soil microbes that are toxic to many bacteria

Question 4

antigen

Answer 4

any protein that our immune system uses to recognise “self” vs “non-self”