How did scientists finally discover the causes of disease? Early stages
By the end of the lesson you ... must be able to describe how people linked germs and disease. should be able to name factors which helped each step and give examples. Could explain how factors enabled these discoveries and explain links between them.
Louis Pasteur, Scientist who published Germ Theory in 1861 1826 Improved microscope by Joseph Jackson Lister. Brewery work 1875 Doctor Robert Koch began to investigate whether specific bacteria caused specific diseases Disproved theory of spontaneous generation
Pages 24 - 25 On your mind map add details of the work and discoveries of Pasteur and Robert Koch. Ensure you include any further dates. In a different colour pen write in where the following factors helped their work. Chance Technology Industry Science
So bad, it’s good? http://www.youtube.com/watch?v=_Iuw6KCx-hA
Page 25 Complete activities.
Germ theory – remember it! 1861
Scientists now knew that germs cause disease There were two ways this could be developed to benefit health. What were they? Prevention Cure
The Development of Germ Theory For centuries people had made a common-sense link between and . In the late 1600s a Dutch clockmaker called made some of the earliest . With these he saw which he called . Technical advances as part of the improved the quality of glass, and a scientist called developed a better which showed clearer and more detailed images. One theory about these organisms was that decaying matter them. This was called . In an alternative theory was published by . He believed that decay was caused by in the .
Worksheet 53 What the step involved Why this step was so important The important factors which helped scientists make the step. Discovering micro-organisms Improved microscopes Pasteur’s germ theory Germ theory vs. spontaneous generation (and it wins!) Linking micro-organisms to disease. Proving the link between bacteria and human disease.
Why this step was so important What the step involved Why this step was so important The important factors which helped scientists make the step. Discovering micro-organisms Improved technology Improved microscopes Science Pasteur’s germ theory Links with industry. Science/ Individual genius Germ theory vs. spontaneous generation (and it wins!) Competition Scientific method Linking micro-organisms to disease. Individual genius. Links with industry Proving the link between bacteria and human disease. Communication. Scientific method.
Why this step was so important What the step involved Why this step was so important The important factors which helped scientists make the step. Discovering micro-organisms Knew they existed (but not what they were). Improved technology Improved microscopes Enabled closer examination of micro-organisms. Science Pasteur’s germ theory Finds that micro-organisms can have an effect on substances. Links with industry. Science/ Individual genius Germ theory vs. spontaneous generation (and it wins!) Moved away from a misleading idea. Competition Scientific method Linking micro-organisms to disease. Suggests the connection for the first time. Individual genius. Links with industry Proving the link between bacteria and human disease. One of main causes of disease has been identified. Communication. Scientific method.