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B1 Part 1 B1 Lesson 6 Semmelweiss B1 Lesson 8 Natural and Acquired immunity
Year 9

Learning outcomes and Specification referenceEdit

B1.1.2 How our bodies defend themselves against infectious diseases

B1 Lesson 7 How microbes make us ill and how the body protects itself
b Microbes can reproduce rapidly inside the body and produce toxins that make us feel ill. Explain how microbes make us feel ill and how viruses damage cells.
c The body has different ways of protecting itself against pathogens. Describe ways in which the body defends itself against disease.
d White blood cells ingest pathogens and produce antibodies and antitoxins. Describe the actions of white blood cells using terms ‘ingest’, ‘antibodies’ and ‘antitoxins’.

Full Specification TextEdit

b) Bacteria and viruses may reproduce rapidly inside the body and may produce poisons (toxins) that make us feel ill. Viruses damage the cells in which they reproduce.
c) The body has different ways of protecting itself against pathogens.
d) White blood cells help to defend against pathogens by:
■ ingesting pathogens
■ producing antibodies, which destroy particular bacteria or viruses
■ producing antitoxins, which counteract the toxins released by the pathogens.

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References to lessons and resources in commercial schemesEdit

Nelson ThornesEdit

OUPEdit

Harper CollinsEdit

Longman/PearsonEdit

HodderEdit

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