Microbes can enter the body by: Immunity257395]KO_Immunity... · 2018. 12. 10. · Immunity...

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Immunity Microbes can enter the body by: Body defences against disease White blood cells are specialised cells which either engulf pathogens and break them down to harmless products or produce specific antibodies which render the pathogens harmless. Natural Immunity Antibodies are produced by a person when needed or they are passed on by the mother during pregnancy. Artificial Immunity A vaccine with dead microbes is injected – the body is “tricked” into producing antibodies ready for the real thing. This is called PASSIVE IMMUNISATION The antibodies are injected directly into the body – this is called ACTIVE IMMUNISATION.

Transcript of Microbes can enter the body by: Immunity257395]KO_Immunity... · 2018. 12. 10. · Immunity...

Page 1: Microbes can enter the body by: Immunity257395]KO_Immunity... · 2018. 12. 10. · Immunity Microbes can enter the body by: Body defences against disease White blood cells are specialised

Immunity

Microbes can enter the body by:

Body defences against disease

White blood cells are

specialised cells which

either engulf pathogens

and break them down

to harmless products

or produce specific

antibodies which render

the pathogens harmless.

Natural Immunity

Antibodies are produced by a person when needed or they are passed on by the mother during pregnancy.

Artificial Immunity

A vaccine with dead microbes is injected –

the body is “tricked” into producing antibodies

ready for the real thing. This is called

PASSIVE IMMUNISATION

The antibodies are injected directly into the body –

this is called ACTIVE IMMUNISATION.

Page 2: Microbes can enter the body by: Immunity257395]KO_Immunity... · 2018. 12. 10. · Immunity Microbes can enter the body by: Body defences against disease White blood cells are specialised

1. What is the definition of a disease? 2. Name 4 ways in which a disease can be caused. 3. How can a microbe enter the body? 4. What are the bodies first line defences? 5. Which cell can fight off a disease? 6. How does the white blood cell fight a disease? 7. What is natural immunity? 8. What is artificial immunity?


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