1. In 1665, Robert Hooke used a microscope to examine a thin slice of cork and saw compartments that he called "cells", which resembled monks' living quarters. 2. In 1673, Anton van Leeuwenhoek was the first to observe living organisms under a microscope. 3. In 1838 and 1839 respectively, Matthias Schleiden and Theodor Schwann concluded that all plants and animals are composed of cells.

1. Cell Guys, Cell Size, and Cell Specialize Chap 7-1 & 7-4 http://www.parlament-berlin.de/Galeriecopy.nsf/0/8ABC720262898739C1256A480037F869?OpenDocumen http://www.ncu.edu.tw/~ls/graph/faculty_pictures/whole_time/SLC/SLC_lab-1.jpg t

2. Microscope image: http://www.answers.com/topic/microscope Cork image: http://www.cortex.de/img_kork/cork_cells_big.jpg Hooke image: http://www.metaweb.com/wiki/upload/5/5c/Hookeyoungmtwb.jpg 1665- ______________________ used a microscope to examine a thin slice of cork and saw “little boxes” He called them “CELLS” because they looked like the small rooms that monks lived in called Cells Robert Hooke

3. Microscope/Leeuwenhoek image: http://www.answers.com/topic/microscope Animation from: http://web.jjay.cuny.edu/~acarpi/NSC/13-cells.htm 1673- ___________________________________ a Dutch microscope maker was the first to see LIVING ORGANISMS. Anton van Leeuwenhoek

4. Plant image: http://www.epa.gov/maia/images/classification.gif Schleiden image: http://web.visionlearning.com/events/Schleiden_Apr5_2005.htm 1838- German botanist __________________________concluded that ALL PLANTS are made of cells Matthias Schleiden

6. Virchow: http://www.parlament-berlin.de/Galeriecopy.nsf/0/8ABC720262898739C1256A480037F869?OpenDocument Mitosis: http://biology.dbs.umt.edu/biol101/labs/lab_6_images/sect01and06/Rebecca,%20tanner,%20and%20liam%20mitosis%20root%20tip.jpg 1855- German medical doctor _____________________ saw dividing cells in the microscope and reasoned that cells come from other cells Rudolph Virchow