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History of the Cell Theory
Cells, the make-up of all living things. Some cell are complete
organisms, such as unicellular bacteria and protozoa. Other types of
cells are called multicellular, such as nerve cells and muscle cells.
Withen the cell is genetic material, Deoxyribonucleic Acid (DNA)
containing coded instructions for the behavior and reproduction of the
cell. The cell was first discovered by the 1665 English scientist Robert
Hooke, who studied the dead cells of cork with a crude microscope.
Robert Hooke was born on the isle of Whight and educated at the
University of Oxford. Hooke could not have discovered the cell without
the microscope which was developed by Antoni van Leeuwenhoek a 1674
Dutch maker of microscopes. Leeuwenhoek born in Delft, Holland and had
little or no scientific education. Leeuwenhoek also confirmed the
discovery of capillary systems. Theodor Schwann a German physiologist
born in Neuss and educated at the universities of Bonn, Wurzburg, and
Berlin, Schwann was involved in the study of the structure of plant and
animal tissues. Along with Matthias Jakob Schleiden a German botanist,
Schwann proposed the cell theory.
The cell theory has three parts:
1. All organisms are composed of cells.
2. Cells are the basic units of structure and function in
organisms
3. All cells come from preexisting cells.
The impact on science was very great due to the discovery of cells and
the cell theory. Many or all things were effected by the discovery of
cells, everything was looked upon in a different way. Some people still
did not believe that all living organisms were made of tiny microscopic
chambers called cells. Many people thought that people that believed in
cells were insane, some people even wanted to put Antoni van Leeuwenhoek
in an insane asylum because he believed in cells. As you can see the
impact of cells was very great on people. Other things were discovered
due to the discovery of cells, such as the dicovery of atoms, the
make-up of all things on the Earth.
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