TwoOldGuys™ Study Guides
BI-125 Botany
History of Cell Theory

the Cell: Historic Perspective

Year Who What
1530 Janssen Bros manufacture microscopes
1665 Hooke 'discovers cells'
invents microtome
1679 Leeuwenhoek discovers protozoa, bacteria
1835 Dujardin contents of cell is the stuff of life
1838 Schleiden all plants are made of cells
1838 Schwann all animals are made of cells
all living beasties made of cells
1846 von Mohl introduced term 'protoplasm'
1850 . discovery of chromosomes
1855 Virchow cell theory:
a. all living beasties made of cells
b. cell is simplest unit of life
c. all cells arise from pre-existing cells

© 2004-2005 TwoOldGuys ™