History and microbes
Louis Pasteur (1822-95)
Proved decay was caused by microbes in the air
Said if microbes got in body, they would cause disease, so need to prevent their entry
Joseph Lister (1827-1912)
Developed ideas of antibiotics which are solutions that kill microbes (e.g. Dettol)
Lister was a surgeon and he sprayed his instruments with carbolic acid, and this reduced infection after operations
Alexander Fleming (1881-1955)
Left an agar plate out which had bacteria growing on it, and a mould grew which caused bacteria around it to die.
The mould (Penicillium notatum) was producing penicillin and this killed bacteria
For homework you will need to carry out further research and add to these notes.