Louis Pasteur

Question 1

Who was Louis Pasteur?

Answer 1

A chemist who worked in France.

Question 2

How did Pasteur develop the Germ Theory?

Answer 2

1. In the 1850s he was asked by wine producers to find out why their alcohol went sour.
2. He used a microscope to discover microorganisms were making the alcohol sour.
3. He discovered that if any liquid was heated , the germs would be killed (pasteurisation).
4. He invented the ‘S’ shaped glass to stop air and dust from getting to the alcohol. He then realised that germs must be in the dust.
5. He then proved that germs caused illness and disease in humans.

Question 3

When did he publish the Germ Theory?

Answer 3

1861 and it was proved in 1864

Question 4

What else did Pasteur discover?

Answer 4

1. Developed chicken cholera vaccine in 1879
2. Using microbes identified by Koch, he developed a vaccine for anthrax
3. He realised that Jenner was correct but he still could not explain it.
4. He also realised that using weak forms of the disease prevented the disease from occurring again.

Question 5

What did Pasteur discover?

Answer 5

That germs caused disease and therefore disproved the theory of spontaneous generation.

Question 6

In what time period did Pasteur make his discovery?

Answer 6

Industrial