Germ Theory and microbes (Edexcel GCSE History): Flashcards
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Theory: microorganisms cause disease & decay
Theory: microorganisms cause disease & decay
Germ theory
18th century belief: 'bad air' caused disease
18th century belief: 'bad air' caused disease
Miasma
Idea: organisms appear from decaying materials
Idea: organisms appear from decaying materials
Spontaneous generation
By 1700, microscopes revealed...
By 1700, microscopes revealed...
Cloudy images of bacteria/germs
Year microscopes significantly improved clarity
Year microscopes significantly improved clarity
1850
French chemist who published Germ Theory, 1861
French chemist who published Germ Theory, 1861
Louis Pasteur
Pasteur disproved this theory
Pasteur disproved this theory
Spontaneous generation
Pasteur's limitation: couldn't prove link to...
Pasteur's limitation: couldn't prove link to...
Human diseases
German doctor who proved germs cause human disease
German doctor who proved germs cause human disease
Robert Koch
Disease Koch identified microbe for in 1882
Disease Koch identified microbe for in 1882
Tuberculosis (TB)
Disease Koch discovered microorganism for, 1883
Disease Koch discovered microorganism for, 1883
Cholera
Koch's method for growing bacteria
Koch's method for growing bacteria
Agar jelly
Koch used these to make bacteria visible
Koch used these to make bacteria visible
Chemical dyes
Reason Pasteur had limited impact in Britain
Reason Pasteur had limited impact in Britain
Not a medical doctor
Reason Koch had more influence in Britain
Reason Koch had more influence in Britain
Qualified doctor; studied human diseases