Cell Theory
1. All living things are made up of cells.2. Cells are the basic units of structure and function in living things.3. Living cells come only from other living cells.Discoveries Which Led To Cell Theory
The Cell Theory was developed from three German scientist's discoveries. They are Matthias Schleiden, Theodor Schwann, and Rudolph Virchow.
In 1838 the German Botanist Matthias Schleiden discovered that all plants were composed of cells. Then only a year later a German zoologist, Theodor Schwann, discovered that all animals were composed of cells. Later in 1855 a German physician named Rudolph Virchow was doing experiments with diseases when he found that all cells come from other existing cells.
Cells of course were discovered much earlier. The first person to see a cell was Robert Hooke. He used a very primitive microscope, but when he was looking at cork cells under the microscope he saw cells for the first time. The shape of the cells reminded him of the monk monasteries and so he dubbed them "cells."
The first person to see living cells was Van Leeuwenhoek, a microscope builder.
The Cell Theory Timeline
Year of DiscoveryScientistContribution
1595
Hans and Zacharias Janssenproduced the first compound microscope by combining two convex lenses within a tube
1665
Robert Hookediscovered the cellular composition of cork and introduced the word cell to science
1674
Anton van Leeuwenhoekimproved magnification of microscopes by polishing lenses
1676
Anton van Leeuwenhoek"animacules" were discovered
1683
Anton van Leeuwenhoekdiscovered bacteria from a sample of saliva from his mouth
1838
Matthias Schleidendiscovered the plants were made up of cells
1839
Theodor Schwanndiscovered that animals were made up of cells
1855
Rudolph Virchowstated that all living things come from other living things
1. All living things are made up of cells.2. Cells are the basic units of structure and function in living things.3. Living cells come only from other living cells.Discoveries Which Led To Cell Theory
The Cell Theory was developed from three German scientist's discoveries. They are Matthias Schleiden, Theodor Schwann, and Rudolph Virchow.
In 1838 the German Botanist Matthias Schleiden discovered that all plants were composed of cells. Then only a year later a German zoologist, Theodor Schwann, discovered that all animals were composed of cells. Later in 1855 a German physician named Rudolph Virchow was doing experiments with diseases when he found that all cells come from other existing cells.
Cells of course were discovered much earlier. The first person to see a cell was Robert Hooke. He used a very primitive microscope, but when he was looking at cork cells under the microscope he saw cells for the first time. The shape of the cells reminded him of the monk monasteries and so he dubbed them "cells."
The first person to see living cells was Van Leeuwenhoek, a microscope builder.
The Cell Theory Timeline
Year of DiscoveryScientistContribution
1595
Hans and Zacharias Janssenproduced the first compound microscope by combining two convex lenses within a tube
1665
Robert Hookediscovered the cellular composition of cork and introduced the word cell to science
1674
Anton van Leeuwenhoekimproved magnification of microscopes by polishing lenses
1676
Anton van Leeuwenhoek"animacules" were discovered
1683
Anton van Leeuwenhoekdiscovered bacteria from a sample of saliva from his mouth
1838
Matthias Schleidendiscovered the plants were made up of cells
1839
Theodor Schwanndiscovered that animals were made up of cells
1855
Rudolph Virchowstated that all living things come from other living things