cell theor1.docx

8/14/2019 Cell theor1.docx

1/6

Cell theory

A prokaryote

In biology , cell theory is a scientific theory that describes the properties of cells , and the basic

unit of structure in every living thing. The initial development of the theory, during the mid-17th

century, was made possible by advances in microscopy ; the study of cells is called cell biology .

Cell theory is one of the foundations of biology.

The three parts to the cell theory are as described below:

1. All living organisms are composed of one or more cells.

2. The cell is the most basic unit of structure, function, and organization in all organisms.

3. All cells come from pre-existing, living cells.
http://en.wikipedia.org/wiki/Prokaryotehttp://en.wikipedia.org/wiki/Prokaryotehttp://en.wikipedia.org/wiki/Prokaryotehttp://en.wikipedia.org/wiki/Biologyhttp://en.wikipedia.org/wiki/Biologyhttp://en.wikipedia.org/wiki/Biologyhttp://en.wikipedia.org/wiki/Scientific_theoryhttp://en.wikipedia.org/wiki/Scientific_theoryhttp://en.wikipedia.org/wiki/Scientific_theoryhttp://en.wikipedia.org/wiki/Cell_%28biology%29http://en.wikipedia.org/wiki/Cell_%28biology%29http://en.wikipedia.org/wiki/Cell_%28biology%29http://en.wikipedia.org/wiki/Microscopyhttp://en.wikipedia.org/wiki/Microscopyhttp://en.wikipedia.org/wiki/Microscopyhttp://en.wikipedia.org/wiki/Cell_biologyhttp://en.wikipedia.org/wiki/Cell_biologyhttp://en.wikipedia.org/wiki/Cell_biologyhttp://en.wikipedia.org/wiki/File:Average_prokaryote_cell-_en.svghttp://en.wikipedia.org/wiki/Cell_biologyhttp://en.wikipedia.org/wiki/Microscopyhttp://en.wikipedia.org/wiki/Cell_%28biology%29http://en.wikipedia.org/wiki/Scientific_theoryhttp://en.wikipedia.org/wiki/Biologyhttp://en.wikipedia.org/wiki/Prokaryote


2/6

History

Drawing of the structure of cork by Robert Hooke that appeared in Micrographia .

The cell was first discovered by Robert Hooke in 1665. He examined (under a coarse, compound

microscope) very thin slices of bottle cork and saw a multitude of tiny pores that he remarked

looked like the walled compartments a monk would live in. Because of this association, Hooke

called them cells, the name they still bear. However, Hooke did not know their real structure orfunction Hooke's description of these cells (which were actually non-living cell walls) was

published in Micrographia . His cell observations gave no indication of the nucleus and other

organelles found in most living cells.
http://en.wikipedia.org/wiki/Cork_cambiumhttp://en.wikipedia.org/wiki/Cork_cambiumhttp://en.wikipedia.org/wiki/Cork_cambiumhttp://en.wikipedia.org/wiki/Robert_Hookehttp://en.wikipedia.org/wiki/Robert_Hookehttp://en.wikipedia.org/wiki/Robert_Hookehttp://en.wikipedia.org/wiki/Micrographiahttp://en.wikipedia.org/wiki/Micrographiahttp://en.wikipedia.org/wiki/Micrographiahttp://en.wikipedia.org/wiki/Robert_Hookehttp://en.wikipedia.org/wiki/Robert_Hookehttp://en.wikipedia.org/wiki/Robert_Hookehttp://en.wikipedia.org/wiki/Micrographiahttp://en.wikipedia.org/wiki/Micrographiahttp://en.wikipedia.org/wiki/Micrographiahttp://en.wikipedia.org/wiki/Cell_nucleushttp://en.wikipedia.org/wiki/Cell_nucleushttp://en.wikipedia.org/wiki/Cell_nucleushttp://en.wikipedia.org/wiki/Organellehttp://en.wikipedia.org/wiki/Organellehttp://en.wikipedia.org/wiki/File:Cork_Micrographia_Hooke.pnghttp://en.wikipedia.org/wiki/Organellehttp://en.wikipedia.org/wiki/Cell_nucleushttp://en.wikipedia.org/wiki/Micrographiahttp://en.wikipedia.org/wiki/Robert_Hookehttp://en.wikipedia.org/wiki/Micrographiahttp://en.wikipedia.org/wiki/Robert_Hookehttp://en.wikipedia.org/wiki/Cork_cambium


3/6

The first person to make a compound microscope was Zacharias Jansen , while the first to witness

a live cell under a microscope was Anton van Leeuwenhoek , who in 1674 described the algae

Spirogyra and named the moving organisms animalcules, meaning "little animals Leeuwenhoek

probably also saw bacteria . Bacteria are microscopic (very tiny) organisms that are unicellular

(made up of a single cell). Cell theory was in contrast to the vitalism theories proposed before the

discovery of cells.

The idea that cells were separable into individual units was proposed by Ludolph Christian

Treviranu and Johann Jacob Paul Moldenhawer All of this finally led to Henri Dutrochet

formulating one of the fundamental tenets of modern cell theory by declaring that "The cell is the

fundamental element of organization".

The observations of Hooke, Leeuwenhoek, Schleiden, Schwann, Virchow, and others led to the

development of the cell theory. The cell theory is a widely accepted explanation of the

relationship between cells and living things. The cell theory states:

All living things or organisms are made of cells and their products.

New cells are created by old cells dividing into two.

Cells are the basic building units of life.

The cell theory holds true for all living things, no matter how big or small. Since according to

research, cells are common to all living things, they can provide information about all life. And

because all cells come from other cells, scientists can study cells to learn about growth,

reproduction, and all other functions that living things perform. By learning about cells and how

they function, you can learn about all types of living things. Cells are the building blocks of life.

Credit for developing cell theory is usually given to three scientists: Theodor Schwann , Matthias

Jakob Schleiden , and Rudolf Virchow . In 1839, Schwann and Schleiden suggested that cells

were the basic unit of life. Their theory accepted the first two tenets of modern cell theory (see

next section, below). However, the cell theory of Schleiden differed from modern cell theory in

that it proposed a method of spontaneous crystallization that he called "free cell formation". In

1855, Rudolf Virchow concluded that all cells come from pre-existing cells, thus completing the

classical cell theory. (Note that the idea that all cells come from pre-existing cells had in fact
http://en.wikipedia.org/wiki/Sacharias_Jansenhttp://en.wikipedia.org/wiki/Sacharias_Jansenhttp://en.wikipedia.org/wiki/Sacharias_Jansenhttp://en.wikipedia.org/wiki/Anton_van_Leeuwenhoekhttp://en.wikipedia.org/wiki/Anton_van_Leeuwenhoekhttp://en.wikipedia.org/wiki/Anton_van_Leeuwenhoekhttp://en.wikipedia.org/wiki/Algaehttp://en.wikipedia.org/wiki/Algaehttp://en.wikipedia.org/wiki/Algaehttp://en.wikipedia.org/wiki/Spirogyrahttp://en.wikipedia.org/wiki/Spirogyrahttp://en.wikipedia.org/wiki/Bacteriahttp://en.wikipedia.org/wiki/Bacteriahttp://en.wikipedia.org/wiki/Bacteriahttp://en.wikipedia.org/wiki/Vitalismhttp://en.wikipedia.org/wiki/Vitalismhttp://en.wikipedia.org/wiki/Vitalismhttp://en.wikipedia.org/wiki/Johann_Jacob_Paul_Moldenhawerhttp://en.wikipedia.org/wiki/Johann_Jacob_Paul_Moldenhawerhttp://en.wikipedia.org/wiki/Johann_Jacob_Paul_Moldenhawerhttp://en.wikipedia.org/wiki/Henri_Dutrochethttp://en.wikipedia.org/wiki/Henri_Dutrochethttp://en.wikipedia.org/wiki/Henri_Dutrochethttp://en.wikipedia.org/wiki/Theodor_Schwannhttp://en.wikipedia.org/wiki/Theodor_Schwannhttp://en.wikipedia.org/wiki/Theodor_Schwannhttp://en.wikipedia.org/wiki/Matthias_Jakob_Schleidenhttp://en.wikipedia.org/wiki/Matthias_Jakob_Schleidenhttp://en.wikipedia.org/wiki/Matthias_Jakob_Schleidenhttp://en.wikipedia.org/wiki/Matthias_Jakob_Schleidenhttp://en.wikipedia.org/wiki/Rudolf_Virchowhttp://en.wikipedia.org/wiki/Rudolf_Virchowhttp://en.wikipedia.org/wiki/Rudolf_Virchowhttp://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23Modern_interpretationhttp://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23Modern_interpretationhttp://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23Modern_interpretationhttp://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23Modern_interpretationhttp://en.wikipedia.org/wiki/Rudolf_Virchowhttp://en.wikipedia.org/wiki/Matthias_Jakob_Schleidenhttp://en.wikipedia.org/wiki/Matthias_Jakob_Schleidenhttp://en.wikipedia.org/wiki/Theodor_Schwannhttp://en.wikipedia.org/wiki/Henri_Dutrochethttp://en.wikipedia.org/wiki/Johann_Jacob_Paul_Moldenhawerhttp://en.wikipedia.org/wiki/Vitalismhttp://en.wikipedia.org/wiki/Bacteriahttp://en.wikipedia.org/wiki/Spirogyrahttp://en.wikipedia.org/wiki/Algaehttp://en.wikipedia.org/wiki/Anton_van_Leeuwenhoekhttp://en.wikipedia.org/wiki/Sacharias_Jansen


4/6

already been proposed by Robert Remak ; it has been suggested that Virchow plagiarised

Remak.) ]

Modern interpretation

The generally accepted parts of modern cell theory include:

1. All known living things are made up of one or more cells.

2. All living cells arise from pre-existing cells by division.

3. The cell is the fundamental unit of structure and function in all living organisms.

4. The activity of an organism depends on the total activity of independent cells.

5. Energy flow (metabolism and biochemistry ) occurs within cells.6. Cells contain hereditary information (DNA) which is passed from cell to cell during cell division.

7. All cells are basically the same in chemical composition in organisms of similar species.

Types of cells

Cells can be subdivided into the following subcategories:

1. Prokaryotes : Prokaryotes lack a nucleus (although they do have circular or linear DNA) and other

membrane-bound organelles (though they do contain ribosomes ). Bacteria and Archaea are two

domains of prokaryotes.

2. Eukaryotes : Eukaryotes, on the other hand, have distinct nuclei bound by a nuclear membrane

and membrane-bound organelles (mitochondria , chloroplasts , lysosomes , rough and smooth

endoplasmic reticulum , vacuoles ). In addition, they possess organized chromosomes which store

genetic material.
http://en.wikipedia.org/wiki/Robert_Remakhttp://en.wikipedia.org/wiki/Robert_Remakhttp://en.wikipedia.org/wiki/Robert_Remakhttp://en.wikipedia.org/wiki/Metabolismhttp://en.wikipedia.org/wiki/Metabolismhttp://en.wikipedia.org/wiki/Metabolismhttp://en.wikipedia.org/wiki/Biochemistryhttp://en.wikipedia.org/wiki/Biochemistryhttp://en.wikipedia.org/wiki/Biochemistryhttp://en.wikipedia.org/wiki/Prokaryotehttp://en.wikipedia.org/wiki/Prokaryotehttp://en.wikipedia.org/wiki/Cell_nucleushttp://en.wikipedia.org/wiki/Cell_nucleushttp://en.wikipedia.org/wiki/Cell_nucleushttp://en.wikipedia.org/wiki/DNAhttp://en.wikipedia.org/wiki/DNAhttp://en.wikipedia.org/wiki/DNAhttp://en.wikipedia.org/wiki/Organellehttp://en.wikipedia.org/wiki/Organellehttp://en.wikipedia.org/wiki/Organellehttp://en.wikipedia.org/wiki/Ribosomehttp://en.wikipedia.org/wiki/Ribosomehttp://en.wikipedia.org/wiki/Ribosomehttp://en.wikipedia.org/wiki/Bacteriahttp://en.wikipedia.org/wiki/Bacteriahttp://en.wikipedia.org/wiki/Bacteriahttp://en.wikipedia.org/wiki/Archaeahttp://en.wikipedia.org/wiki/Archaeahttp://en.wikipedia.org/wiki/Archaeahttp://en.wikipedia.org/wiki/Domain_%28biology%29http://en.wikipedia.org/wiki/Domain_%28biology%29http://en.wikipedia.org/wiki/Eukaryotehttp://en.wikipedia.org/wiki/Eukaryotehttp://en.wikipedia.org/wiki/Mitochondriahttp://en.wikipedia.org/wiki/Mitochondriahttp://en.wikipedia.org/wiki/Mitochondriahttp://en.wikipedia.org/wiki/Chloroplastshttp://en.wikipedia.org/wiki/Chloroplastshttp://en.wikipedia.org/wiki/Chloroplastshttp://en.wikipedia.org/wiki/Lysosomeshttp://en.wikipedia.org/wiki/Lysosomeshttp://en.wikipedia.org/wiki/Lysosomeshttp://en.wikipedia.org/wiki/Endoplasmic_reticulumhttp://en.wikipedia.org/wiki/Endoplasmic_reticulumhttp://en.wikipedia.org/wiki/Vacuoleshttp://en.wikipedia.org/wiki/Vacuoleshttp://en.wikipedia.org/wiki/Vacuoleshttp://en.wikipedia.org/wiki/Vacuoleshttp://en.wikipedia.org/wiki/Endoplasmic_reticulumhttp://en.wikipedia.org/wiki/Lysosomeshttp://en.wikipedia.org/wiki/Chloroplastshttp://en.wikipedia.org/wiki/Mitochondriahttp://en.wikipedia.org/wiki/Eukaryotehttp://en.wikipedia.org/wiki/Domain_%28biology%29http://en.wikipedia.org/wiki/Archaeahttp://en.wikipedia.org/wiki/Bacteriahttp://en.wikipedia.org/wiki/Ribosomehttp://en.wikipedia.org/wiki/Organellehttp://en.wikipedia.org/wiki/DNAhttp://en.wikipedia.org/wiki/Cell_nucleushttp://en.wikipedia.org/wiki/Prokaryotehttp://en.wikipedia.org/wiki/Biochemistryhttp://en.wikipedia.org/wiki/Metabolismhttp://en.wikipedia.org/wiki/Robert_Remak


5/6

References

1.

Jump up ^ Inwood, Stephen (2003). The man who knew too much: the strange and inventive life of RobertHooke, 1635 1703 . London: Pan. p. 72. ISBN 0-330-48829-5 .

2. Jump up ^ Karling JS (1939). "Schleiden's Contribution to the Cell Theory". The American Naturalist 73

(749): 517 37. doi :10.1086/280862 .

3. Jump up ^ Moll WAW (2006). "Antonie van Leeuwenhoek" . Archived from the original on 2008-06-02.

Retrieved 2008-11-25.

4. Jump up ^ Porter JR (1976). "Antony van Leeuwenhoek: tercentenary of his discovery of bacteria".

Bacteriol Rev 40 (2): 260 9. PMC 413956 . PMID 786250 .

5. Jump up ^ Col, Jeananda. "Bacteria" . EnchantedLearning.com. Retrieved 19 September 2013.

6. Jump up ^ Treviranus, Ludolph Christian (1811) "Beytrge zur Pflanzenphysiologie"

7. Jump up ^ Moldenhawer, Johann Jacob Paul (1812) "Beytrge zur Anatomie der Pflanzen"

8. Jump up ^ Dutrochet, Henri (1824) "Recherches anatomiques et physiologiques sur la structure intime

des animaux et des vegetaux, et sur leur motilite, par M.H. Dutrochet, avec deux planches"

9. Jump up ^ Schleiden, Matthias Jakob (1839) "Contributions to Phytogenesis"

10. Jump up ^ Silver, GA (1987). "Virchow, the heroic model in medicine: health policy by accolade".

American Journal of Public Health 77 (1): 82 8. doi :10.2105/AJPH.77.1.82 . PMC 1646803 . PMID 3538915 .
http://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_ref-1http://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_ref-1http://en.wikipedia.org/wiki/International_Standard_Book_Numberhttp://en.wikipedia.org/wiki/International_Standard_Book_Numberhttp://en.wikipedia.org/wiki/Special:BookSources/0-330-48829-5http://en.wikipedia.org/wiki/Special:BookSources/0-330-48829-5http://en.wikipedia.org/wiki/Special:BookSources/0-330-48829-5http://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_ref-2http://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_ref-2http://en.wikipedia.org/wiki/Digital_object_identifierhttp://en.wikipedia.org/wiki/Digital_object_identifierhttp://dx.doi.org/10.1086%2F280862http://dx.doi.org/10.1086%2F280862http://dx.doi.org/10.1086%2F280862http://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_ref-3http://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_ref-3http://web.archive.org/web/20080602095555/http:/www.euronet.nl/users/warnar/leeuwenhoek.html#referenceshttp://web.archive.org/web/20080602095555/http:/www.euronet.nl/users/warnar/leeuwenhoek.html#referenceshttp://web.archive.org/web/20080602095555/http:/www.euronet.nl/users/warnar/leeuwenhoek.html#referenceshttp://www.euronet.nl/users/warnar/leeuwenhoek.html#referenceshttp://www.euronet.nl/users/warnar/leeuwenhoek.html#referenceshttp://www.euronet.nl/users/warnar/leeuwenhoek.html#referenceshttp://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_ref-4http://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_ref-4http://en.wikipedia.org/wiki/PubMed_Centralhttp://en.wikipedia.org/wiki/PubMed_Centralhttp://www.ncbi.nlm.nih.gov/pmc/articles/PMC413956http://www.ncbi.nlm.nih.gov/pmc/articles/PMC413956http://www.ncbi.nlm.nih.gov/pmc/articles/PMC413956http://en.wikipedia.org/wiki/PubMed_Identifierhttp://en.wikipedia.org/wiki/PubMed_Identifierhttp://www.ncbi.nlm.nih.gov/pubmed/786250http://www.ncbi.nlm.nih.gov/pubmed/786250http://www.ncbi.nlm.nih.gov/pubmed/786250http://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_ref-5http://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_ref-5http://www.enchantedlearning.com/subjects/bacterium/http://www.enchantedlearning.com/subjects/bacterium/http://www.enchantedlearning.com/subjects/bacterium/http://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_ref-6http://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_ref-6http://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_ref-7http://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_ref-7http://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_ref-8http://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_ref-8http://books.google.com/books?id=KwQOAAAAQAAJ&printsec=frontcover#PPA166,M1http://books.google.com/books?id=KwQOAAAAQAAJ&printsec=frontcover#PPA166,M1http://books.google.com/books?id=KwQOAAAAQAAJ&printsec=frontcover#PPA166,M1http://books.google.com/books?id=KwQOAAAAQAAJ&printsec=frontcover#PPA166,M1http://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_ref-9http://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_ref-9http://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_ref-10http://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_ref-10http://en.wikipedia.org/wiki/American_Journal_of_Public_Healthhttp://en.wikipedia.org/wiki/American_Journal_of_Public_Healthhttp://en.wikipedia.org/wiki/Digital_object_identifierhttp://en.wikipedia.org/wiki/Digital_object_identifierhttp://dx.doi.org/10.2105%2FAJPH.77.1.82http://dx.doi.org/10.2105%2FAJPH.77.1.82http://dx.doi.org/10.2105%2FAJPH.77.1.82http://en.wikipedia.org/wiki/PubMed_Centralhttp://en.wikipedia.org/wiki/PubMed_Centralhttp://www.ncbi.nlm.nih.gov/pmc/articles/PMC1646803http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1646803http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1646803http://en.wikipedia.org/wiki/PubMed_Identifierhttp://en.wikipedia.org/wiki/PubMed_Identifierhttp://www.ncbi.nlm.nih.gov/pubmed/3538915http://www.ncbi.nlm.nih.gov/pubmed/3538915http://www.ncbi.nlm.nih.gov/pubmed/3538915http://www.ncbi.nlm.nih.gov/pubmed/3538915http://en.wikipedia.org/wiki/PubMed_Identifierhttp://www.ncbi.nlm.nih.gov/pmc/articles/PMC1646803http://en.wikipedia.org/wiki/PubMed_Centralhttp://dx.doi.org/10.2105%2FAJPH.77.1.82http://en.wikipedia.org/wiki/Digital_object_identifierhttp://en.wikipedia.org/wiki/American_Journal_of_Public_Healthhttp://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_ref-10http://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_ref-9http://books.google.com/books?id=KwQOAAAAQAAJ&printsec=frontcover#PPA166,M1http://books.google.com/books?id=KwQOAAAAQAAJ&printsec=frontcover#PPA166,M1http://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_ref-8http://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_ref-7http://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_ref-6http://www.enchantedlearning.com/subjects/bacterium/http://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_ref-5http://www.ncbi.nlm.nih.gov/pubmed/786250http://en.wikipedia.org/wiki/PubMed_Identifierhttp://www.ncbi.nlm.nih.gov/pmc/articles/PMC413956http://en.wikipedia.org/wiki/PubMed_Centralhttp://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_ref-4http://www.euronet.nl/users/warnar/leeuwenhoek.html#referenceshttp://web.archive.org/web/20080602095555/http:/www.euronet.nl/users/warnar/leeuwenhoek.html#referenceshttp://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_ref-3http://dx.doi.org/10.1086%2F280862http://en.wikipedia.org/wiki/Digital_object_identifierhttp://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_ref-2http://en.wikipedia.org/wiki/Special:BookSources/0-330-48829-5http://en.wikipedia.org/wiki/International_Standard_Book_Numberhttp://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_ref-1


6/6

INDEX

1 History

2 Modern interpretation

3 Types of cells

4 See also

5 References
http://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23Historyhttp://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23Historyhttp://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23Modern_interpretationhttp://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23Modern_interpretationhttp://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23Types_of_cellshttp://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23Types_of_cellshttp://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23See_alsohttp://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23See_alsohttp://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23Referenceshttp://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23Referenceshttp://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23Referenceshttp://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23See_alsohttp://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23Types_of_cellshttp://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23Modern_interpretationhttp://c/Documents%20and%20Settings/Server01/Desktop/Cell%20theory%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23History