Infectious Diseases and Antibiotics 3.0 / 5 based on 1 rating ? BiologyMicrobes and diseaseGCSEOCR Created by: ryanCreated on: 12-01-13 15:13 What causes infectious disease? Infectious diseases are caused by parasitic microorganisms that infect you these disease causing microorganisms are called pathogens. 1 of 8 How do pathogens make us ill? The invading pathogen may cause damage to cells and may also release chemicals called toxins. 2 of 8 Name four types of pathogens and name one disease caused by each type. Fungi - causes athlete's foot, Bacterium - causes cholera, Viruses - causes flu, Protozoa - causes malaria. 3 of 8 What is the difference between a pathogen and a parasite? A parasite lives in the body and takes nutrients and shelters, whereas a pathogen causes disease, through cell damage and toxins. 4 of 8 What is the incidence of a disease? The incidence of a disease is the rate at which new cases occur in a population. 5 of 8 What is a Vector? A vector is an organism that does not cause disease itself but spreads infection by moving pathogens from one host to another. 6 of 8 What are antibiotics? Antibiotics are chemicals produced by some bacteria or fungi that prevent the growth or kill other bacteria or fungi. 7 of 8 Why do antibiotics have to be used carefully? If antibiotics are not used carefully resistant strains of bacteria develop. 8 of 8
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