B1 Pathogens and Infections 0.0 / 5 ? BiologyHealthy livingGCSEAQA Created by: codydavies1759Created on: 10-05-17 13:26 What are pathogens? Microorganisms that cause disease 1 of 11 Viruses reproduce inside a body cell and do what? destroy it when they burst out, then they invade other cells. 2 of 11 What does bacteria do that makes us ill? produce toxins inside the body 3 of 11 What do anti toxins do? They neutralise the toxins that bacteria produce. 4 of 11 Why can't antibiuotics be used to kill viruses? As it is hard to kill the virus in the cell without damaging the bodys tissue. 5 of 11 whats a pandemic? when a disease affects a whole country or goes worldwide 6 of 11 whats an epidemic? when a wide spread of people suffer from a disease 7 of 11 when do new infectious diseases appear? when mutations occur in bacteria or viruses 8 of 11 what three things do white blood cells do to defend the body? 1) ingest pathogens 2) produce antibodies to destroy pathogens 3)produce antitoxins that neutralise the toxins released by pathogens 9 of 11 what are antibiotics? drugs that kill bacteria inside your body without killing your own cells. 10 of 11 hwo do bacteria become resistant to antibiotics? by natural selection 11 of 11
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