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10. Diseases and immunity
A section of Biology, 0610
Listing 10 of 182 questions
Define the term pathogen. The body has defences against pathogens. The defences can be grouped into three types and these are listed in Table 9.1. Complete Table 9.1 by giving a specific example for each type of defence. Table 9.1 type of body defence example mechanical barrier chemical barrier cells Suggest two reasons why it is important for people to wash their bodies frequently. A student’s shirt has food stains on it. The food stain contains proteins and fats. The shirt is washed in a biological washing powder. Explain why a biological washing powder is effective at removing the stain. shows an example of an unhygienic practice in a kitchen. Explain why hygienic food preparation is important.
0610_m19_qp_32
THEORY
2019
Paper 3, Variant 2
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Questions Discovered
182