Pasteur and Koch

In 1847, a scientist noted that when physicians washed their hands before they had contact with their patients, there was a decreased number of infections. This was one of the first clues that -

• substances such as bacteria may cause disease

• bacteria generate spontaneously on hands

• physicians deliberately infect patients

• bacteria are present in water

Which scientist designed a special flask that allowed air in but kept microbes out and once and for all disproved spontaneous generation?

• Redi

• Needham

• Spallanzani

• Pasteur

The German physician Robert Koch provided evidence to support the germ theory of infectious disease. Koch isolated bacteria from a cow with anthrax, then injected the bacteria into a healthy mouse. To support germ theory, what must have happened to the healthy mouse?

• It produced antibiotics

• It became immune to viral infections

• It spread smallpox

• It became sick

Health practices today include teaching sanitation, the safe handling of food and water, aseptic techniques, and the development of vaccinations. These examples show that people have accepted the principals of which theory?

• The Theory of Evolution

• Cell Theory

• The Theory of Spontaneous Generation

• Germ Theory

The germ theory of disease states that infectious diseases are caused by -

• heredity

• microorganisms

• chemicals

• toxins

The belief that living things can come from non-living things is called -

• Germ Theory

• Cell Theory

• Spontaneous Generation

• Microorganism Magic

Which scientist created a set of postulates to identify that germs are responsible for causing diseases?

• Pasteur

• Semmelweis

• Snow

• Koch

Although controversial at first, the germ theory proposed that microorganisms were the cause of many diseases. Which of these was a result of the general acceptance that microorganisms cause disease?

• The development and use of antibiotics

• The belief in spontaneous generation

• The link between viruses and RNA

• The proof of a supernatural cause for illness

-A surgeon washes his hands and puts gloves on before surgery

-A medical instrument is sealed in an air-tight container before use

-Meat is kept in an air-tight container in a refridgerated area

-Milk is pasteurized before being distributed

These practices were created due to the discovery of the -

• microorganisms theory

• germ theory

• cell theory

• sensitization theory

The results of Pastuer's experiment helped Pasteur to -

• reject the theory of spontaneous generation

• isolate the virus responsible for smallpox

• convince people to cover food

• produce a vaccine against rabies