preventing and treating disease 0.0 / 5 ? BiologydiseasesGCSENone Created by: frankiew2024Created on: 23-01-24 21:26 what non specific systems does the body use to prevent pathogens getting into it ? - skin - mucus in the nose - stomach acid 1 of 13 what three functions do white blood cells have ? - phagocytosis - producing antibodies - producing antitoxins 2 of 13 what happens during phagocytosis ? phagocyte is attracted to the area of infection, engulfs pathogen, releases enzymes to digest pathogen 3 of 13 what are antigens ? proteins on surface of a pathogen 4 of 13 why are antibodies a specific defence ? have to be right shape for pathogens unique antigens so they target a specific pathogen 5 of 13 what is the function of an antitoxin ? neutralise toxins produced by pathogens 6 of 13 what does a vaccine contain ? small quantity of a dead or inactive form of pathogen 7 of 13 how does vaccination protect against a specific pathogen ? stimulates the body to produce antibodies, if the same pathogen reenters the body white blood cells rapidly produce correct antibodies. 8 of 13 what is herd immunity ? when most of the population is vaccinated against a disease, less likely to spread. 9 of 13 what is an antibiotic ? a drug that kills bacteria but not viruses 10 of 13 what do painkillers do ? treat some symptoms of diseases and relieve pain 11 of 13 what properties of new drugs are clinical trials disigned to test ? - toxicity - optimum dose 12 of 13 give two examples in which monoclonal antibodies can be used for - treating cancer - in pregnancy tests 13 of 13
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