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Science Timeline

Terms in this set (28)

In 1663 observed cells in a piece of cork.
Robert Hooke
had images of spiral bacteria
Anton von Leeuwenhoek
All organisms are composed of cells. The cell is the basic unit of function in all living organisms
The Cell Theory
Published a book with his sketches of what he saw about cells
Robert Hooke
Developed in the 1940s. Uses beams of electrons rather than natural light to magnify images.Produces black and white images, unless computer colored
Electron Microscopes
several types of electron microscopes
Scanning, Transmission, Tunneling
viewed single celled organisms with a simple light microscope that had a single lens
Anton von Leeuwenhoek
observed plants and animals and found them to be composed of cells in the late 1830s.
Theodore Schwann and Matthias Schleiden
who came up with the theory that
all cells come from pre existing cells (and when)
Rudolf Virchow, 1858
Inside structures of cell. 2D. 100,000 + magnification
Transmission electron microscope
TEM
Atoms on the surface of cells. 3D. 100,000,000 x
magnification
Scanning Tunneling
Microscope STM
Surface of object. 3D. Up to 1500 x magnification
Scanning electron microscope SEM
Controls what comes in and out of the cell, like a guarded gate
cell membrane
Rigid barrier seen in
plant cells and some
bacteria, fungi and
protists
cell wall
The brain of the cell
nucleus
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