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Human Physical and Chemical Defences — Edexcel GCSE Biology 1BI0
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Biology
Edexcel GCSE Biology
Health, Disease and Medicines
Human Immunity and Medicines
Human Physical and Chemical Defences
Edexcel GCSE Biology · 1BI0
Human Physical and Chemical Defences
What you need to know
Describe how physical barriers like mucus, cilia, and skin protect the body from pathogens.
Describe how chemical defences like lysozymes and hydrochloric acid protect the body.
Revision notes
1
Human Physical and Chemical Defences
6 key terms
Practise with past papers
Key terms & definitions
Previous topic: Plant Defences
Identifying Plant Diseases
Next subtopic
Specific Immune System
