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Cell Theory

Important scientists and their contributions to the development of cell theory.

elis sugiyarto

on 20 March 2011

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Transcript of Cell Theory

The History of the Cell Theory Hans and Zacharias Janssen Hans was the father of Zacharius and they were dutch lens grinders. Because of this, they created the first microscope with 2 lenses. Robert Hooke He was an English Scientist

In 1665, he started looking at a thin piece of cork through a compound microscope.
He observed that there was tiny, hollow, room-like structures. These reminded him of the rooms the monks lived in, so he called them cells 1595 1665 1680 Anton Leeuwenhoek He was a dutch merchant and amateur scientist He was the first person to describe bacteria (from teeth scrapings) and protozoans (from pond water).
He helped prove the theory of blood circulation. Bacteria Protozoa 1838 Matthias Schleiden He was a german botanist He viewed plants under a microscope and discovered that plant parts are made of cells 1839 Theodor Schwann He was a german zoologist.
He looked at animal parts underneath a microcope.
Discovered that animal parts were made out of cells.
With Schleiden, they created the cell theory, which stated that all living things were made up of one or more cells. 1855 Rudolph Virchow He was a German physician Applied the cell theory to explain the effects of disease in the organs and tissue of the body.
He said that diseases arose primarily in the individual cells of tissues and organs.
He also extended the cell theory by stating "all living cells arise from pre-existing cells". cell division 1883 August Weismann German Biologist He expressed the theory of Germ-plasm.
Building on Darwin's idea that specific inherited characteristices are passed on from one generation to the next, Weismann stated that the genetic code for each organism was contained it its germ cells (the cells that created sperm and eggs).
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