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Immunity
B1 Biology - Immunity and Vaccination
Question | Answer |
---|---|
Five barriers to stop pathogens entering your body. | Skin, tears, blood clotting, stomach acid, mucus |
The system in your body that deals with disease? | Immune system |
White blood cells that engulf pathogens | Phagocyte |
Lymphocytes produce these. | Antibodies and antitoxins |
Protein markers found on the surface of cells | Antigens |
Chemicals produced by your body which attach to antigens | Antibodies |
When pathogens are coated with antibodies, they are attacked by? | White blood cells |
You have this when you can no longer catch a disease. | Immunity |
The process where dead or changed pathogens are injected into your body. | Vaccination |
This can make someone immune to a disease without ever having the disease. | Immunisation |
Why do we need new flu vaccines every year? | The antigens on the virus change each year |
The spread of a disease across a whole country | Epidemic |
The spread of a disease across a whole continent | Pandemic |