1. *---I------*---I--------I----*--*-I A 16OO B 1700 1800 C D A The first microscope was invented B Hooke named the little boxes he saw under his microscope cells. C Schlieden studied plant parts under a microscope and Schwann concluded that all animals are made of cells. D Virchow proposed that cells come from cells that already exist.

2. Cell Theory 1. All organisms are made up of one or more cells. 2. Cells are the basic units of structure and function in all organisms. 3. All cells come from cells that already exist.

3. Ch. 2 Section 2 Simple microscope – uses light to magnify; uses one lens Electron microscope – uses a magnetic field; magnifies up to one million times Compound microscope – uses light to magnify; uses two lenses Stereomicroscope – uses light to magnify; gives a three dimensional view Antonie van Leeuwenhoek – mid 1600 made a simple microscope with a tiny glass bead Robert Hooke – In 1665 viewed cork and named the little boxes he saw under his microscope cells Matthias Schlieden - In 1830 used a microscope to study plants and concluded that all plants are made of cells Theodore Schwann – Mid 1800’s concluded all animals are made up of cell Rudolf Virchow –Late 1800’s hypothesized that cells divide to form new cells