Early scientists Flashcards
Robert Hooke
Observed cork, discovered life’s smallest units made of “little boxes” or “cells”
Anton van Leeuwenhoek
Discovered first living organisms: “Animalcules”
Matthias Schleiden
discovered plant cells
Theodor Schwann
discovered animal cells
Rudolf Virchow
Proposed the cell theory
The cell theory is the theory that all living things are composed of cells, cells are the basic unit of life, and all cells arise from preexisting cells
Francesco Redi
filled jars with decaying meat and found that jars covered with a fine net had no maggots and jars opened had maggots appeared (supported biogenesis)
John Needham
put boiled nutrient broth into covered flasks and found microbial growth (supported spontaneous generation)
Lazzaro Spallanzani
boiled nutrient broth solutions in flasks, heated, then sealed and found no microbial growth (supported biogenesis)
Robert Koch
proved the germ theory
The germ theory is the idea that microorganisms cause disease
Edward Jenner
The scientist given credit for “discovering” vaccines
noticed that milkmaids with cowpox were protected from smallpox
Woese and Fox
proposed a classification system based on the cellular organization of organisms: 3 domains
Lynn Margulis
proposed the endosymbiotic theory that eukaryotic cells evolved from prokaryotic cells
