(a)[1]
Define pathogen.
(b)[3]
Fill in Table 9.1 with one specific example for every defence type.
(c(i))[2]
Suggest two reasons why it matters for people to wash their bodies often.
(c(ii))[2]
Explain why a biological washing powder is good at removing the stain.
(d)[2]
Explain why preparing food hygienically is important.