micro exam 1 scientists

Hooke

• described the fruiting structures of molds

• microorganisms

Leeuwenhoek

• first to observe and accurately describe bacteria

• wee animalcules

Redi

discredited spontaneous generation for large animals- red meat experiment

Pasteur

• proved microorganisms ferment with swan neck experiment

• pasteurization

• aseptic technique

• attenuation

• developed vaccines

• solidified germ theory of disease

• disproved spontaneous generation

scientists who were indirect evidence for the germ theory of disase

semmelweis and lister

Semmelweis

hand-washing to prevent childbed fever

Lister

• developed surgery system designed to prevent microbes from entering wounds

• his patients had fewer postop. infections

scientist who was direct evidence for germ theory of disease

koch

scientists who helped disprove spontaneous generation

• redi

• pasteur

koch

• established relationship between microbe and disease

• his postulates are still used today to establish link between microbe and disease

koch’s methods and materials

• nutrient agar

• nutrient broth

• petri dish

• streak plating to isolate bacterial colonies

• obtaining and growing bacteria in pure cultures

Jenner

smallpox vaccine

this was before germ theory of disease

Cohn

• discovered bacterial endospores

• botanist

• described bacteria based on shape

Flemming

discovered penicillin

Beijerinck

• pioneered use of enriched cultures and selective media

• isolated 1st pure cultures of soil and aquatic bacteria

• described 1st virus

Winogradsky

• discovered numerous interesting metabolic processes like anaerobic nitrogen fixation

• chemolithotrophy

Griffith

• transforming principle

• cracking code of life

• example of horizontal gene transfer