5276555
Descrição
FlashCards por Alice Hathaway, atualizado more than 1 year ago
|
|
Criado por Alice Hathaway
mais de 8 anos atrás
|
|
| Questão | Responda |
| What was the theory on micro-organisms before the germ theory? | Spontaneous generation |
| What did this mean? | The micro-organisms (as seen on rotting food) were spontaneously generated through the process of decay |
| Who came up with The Germ Theory? | Louis Pasteur |
| When did he prove it? | 1860-1864 |
| What did he do first? | Boiled up liquid and put half into an open flask and half into a swan neck flask |
| What was special about the swan neck flask? | It didn't allow any air in it - it was 'sealed' |
| What did he find? | After the first few days, the open flask had begun to get mouldy, but the liquick in the swan neck flask was still clean and sterile! |
| What did he do next? | He checked his theory by leaving the flask for moths. It was still sterile! Then, he shook it so air was able to enter. |
| What did he find? | After a few days, the liquid had gone mouldy |
| What did this prove? | Germs were in the air, not spontaneously generated as previously thought! It was the germs in the air that caused things to mould. |
| What happened next? | He began to link his discovery of germs to disease... |
Quer criar seus próprios Flashcards gratuitos com GoConqr? Saiba mais.