History and protozoa. Other types of cells arecalled

History and protozoa. Other types of cells arecalled

History of the Cell TheoryRyan StrehleinCells, the make-up of all living things. Some cell are completeorganisms, such as unicellular bacteria and protozoa. Other types of cells arecalled multicellular, such as nerve cells and muscle cells. Withen the cell isgenetic material, Deoxyribonucleic Acid (DNA) containing coded instructions forthe behavior and reproduction of the cell. The cell was first discovered by the1665 English scientist Robert Hooke, who studied the dead cells of cork with acrude microscope.

Robert Hooke was born on the isle of Whight and educated atthe University of Oxford.Hooke could not have discovered the cell without themicroscope which was developed by Antoni van Leeuwenhoek a 1674 Dutch maker ofmicroscopes. Leeuwenhoek born in Delft, Holland and had little or no scientificeducation. Leeuwenhoek also confirmed the discovery of capillary systems.Theodor Schwann a German physiologist born in Neuss and educated at theuniversities of Bonn, Wurzburg, and Berlin, Schwann was involved in the study ofthe structure of plant and animal tissues.

Along with Matthias Jakob Schleidena 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 organisms3. All cells come from preexisting cells.

The impact on science was very great due to the discovery of cells andthe 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 notbelieve that all living organisms were made of tiny microscopic chambers calledcells. Many people thought that people that believed in cells were insane, somepeople even wanted to put Antoni van Leeuwenhoek in an insane asylum because hebelieved 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 dicoveryof atoms, the make-up of all things on the Earth.Words/ Pages : 332 / 24