ch 3 Flashcards
spontaneous generation
Ancient belief: like can arise from nonliving matter at any moment
Francesco Redi
-disproved SG
-He concluded that magazine only foreman flies were allowed to lay eggs in the meet and at the maggots for the offsite applies not a product of spontaneous generation
John Needham
-was in favor of SG
-He briefly boil the broth infused plant or animal matter hoping to kill a pre-existing microbe, then he sealed the flask, Needham observed that the broth become cloudy and the container contained numerous microscopic creatures . He argued that the new microbes must have arisen spontaneously but in reality he did not boil the broth enough to kill a pre-existing microbes
Lazzaro Spallanzani
-recreated needham and redi’s experiments
-Suggested the microbes were introduced into these flasks from the air
Louis Pasteur
-swan neck experiment
cell theory
-cell is the basic unit of structure
-all cells come from existing cells
endosymbiotic theory
The theory that mitochondria and chloroplast symbiotic relationship within a eukaryotic host
germ theory of disease
Diseases may result from microbial infection 
ignaz semmelweis
-“contaminated” physician transferred causative agent to pts
-promoted hand washing as a solution
john snow
cholera outbreak in london traced sewage in drinking water
louis pasteur
Organisms could spoil food and therefore people
joseph lister
hand washing + carbolic acid in surgery for disinfection
robert koch
koch’s postulates- Specific microbe can cause a specific disease
prokaryotes
-domain: bacteria and archaea
-no true nucleus
eukaryotes
-true nucleus
-domain: eukarya
