1. Intro to Microbiology Spontaneous Generation
Life forms arise from non-living matter
Mice to wheat and underwear??

2. Louis Pasteur
Experiments to prove air contained microorganisms that could grow under the right conditions
Invented pasteurization process
Wine production in France was in trouble… it spoiled quickly
Pasteur heated wine to kill organisms before they multiplied
VIDEO

3. Microbes? Semmelweis Childbed fever
Medical students dissecting bodies to delivering children …
First to have idea that washing hands was important!

4. Lister
Joseph Lister began sterilizing instruments, using disinfectants in air of his operating rooms
Improved survival of his patients helped to support Pasteur’s idea that microbes exist in the air

5. Living organisms are so diverse, a system is needed to classify them
Taxonomy
Living organisms are so diverse, a system is needed to classify them

7. Carl Linneaus Swedish botanist Sorted organisms by physical features
Believed more similar looking = more related

8. Binomial Nomenclature
Linnaeus first used this
two-part scientific name
Latin used as worldwide language for scientists
First part of name is genus
First letter always a capital
Second part is the species
All lowercase
Always write in italics.

9. Species A population of individuals capable of interbreeding
Must produce fertile offspring
Breeding between different species is rare… does not produce fertile offspring
Examples?

10. Levels of Classification
Seven main levels or categories
These are called ‘taxa’ (sing: taxon)
Kingdom
Phylum
Class
Order
Family
Genus
Species

11. Aristotle Two main groups Plants and Animals
Linneaus first to called these “Kingdoms”
This two kingdom system used until invention of the microscope
How did the microscope change taxonomical classifcation forever?