germ theory

Question 1

germ theory

Answer 1

The scientific theory that diseases are caused by microorganisms, like bacteria and viruses, that invade the body.

Question 2

Louis Pasteur

Answer 2

Contribution:
Proved that microorganisms cause disease and developed pasteurization to kill bacteria in food and drinks.

Known For:
His work laid the foundation for modern microbiology.

Question 3

Robert Koch

Answer 3

Contribution: Identified specific bacteria that cause diseases, like tuberculosis and anthrax.

Koch’s Postulates: Set of criteria to link a specific microbe to a specific disease.

Question 4

pasteurisation

Answer 4

Definition: A process of heating food and drink to kill harmful microbes.

Developed By: Louis Pasteur to improve food safety and prevent spoilage.

Question 5

Koch’s Postulates (Summary)

Answer 5

1. The microbe must be found in all cases of the disease.
2. It must be isolated and grown in pure culture.
3. It should cause disease if introduced to a healthy organism.
4. It must be re-isolated from the newly infected host.