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[[File:lighterstill.jpg]][[File:Cells.jpg|right|frame]]

[[File:lighterstill.jpg]][[File:Cells.jpg|right|frame]]

A '''cell''' is the basic [[structural]] and [[function]]al unit of all known living [[organisms]]. It is the smallest unit of an organism that is classified as a living [[thing]], and is often called the building block of life.[1] Some organisms, such as most bacteria, are unicellular (consist of a single cell). Other organisms, such as [[humans]], are multicellular. (Humans have an estimated 100 trillion or 10 ¹⁴ cells; a typical cell size is 10 [http://en.wikipedia.org/wiki/Micrometre µm]; a typical cell mass is 1 [http://en.wikipedia.org/wiki/Nanogram nanogram].) The largest known cell is an unfertilized ostrich egg cell.[2]

A '''cell''' is the basic [[structural]] and [[function]]al unit of all known living [[organisms]]. It is the smallest unit of an organism that is classified as a living [[thing]], and is often called the building block of life.[1] Some organisms, such as most bacteria, are unicellular (consist of a single cell). Other organisms, such as [[humans]], are multicellular. (Humans have an estimated 100 trillion or 10 ¹⁴ cells; a typical cell size is 10 [https://en.wikipedia.org/wiki/Micrometre µm]; a typical cell mass is 1 [https://en.wikipedia.org/wiki/Nanogram nanogram].) The largest known cell is an unfertilized ostrich egg cell.[2]

In 1835 before the final cell theory was developed, [http://en.wikipedia.org/wiki/Jan_Evangelista_Purkyně Jan Evangelista Purkyně] observed small "granules" while looking at the plant tissue through a microscope. The [http://en.wikipedia.org/wiki/Cell_theory cell theory], first developed in 1839 by Matthias Jakob Schleiden and Theodor Schwann, states that all organisms are composed of one or more cells, that all cells come from preexisting cells, that vital [[function]]s of an organism occur within cells, and that all cells contain the hereditary information [[necessary]] for regulating cell functions and for [[transmitting]] [[information]] to the next generation of cells.[3]

In 1835 before the final cell theory was developed, [https://en.wikipedia.org/wiki/Jan_Evangelista_Purkyně Jan Evangelista Purkyně] observed small "granules" while looking at the plant tissue through a microscope. The [https://en.wikipedia.org/wiki/Cell_theory cell theory], first developed in 1839 by Matthias Jakob Schleiden and Theodor Schwann, states that all organisms are composed of one or more cells, that all cells come from preexisting cells, that vital [[function]]s of an organism occur within cells, and that all cells contain the hereditary information [[necessary]] for regulating cell functions and for [[transmitting]] [[information]] to the next generation of cells.[3]

The word cell comes from the Latin cellula, [[meaning]], a small room. The descriptive term for the smallest living biological [[structure]] was coined by [http://en.wikipedia.org/wiki/Robert_Hooke Robert Hooke] in a [[book]] he published in 1665 when he compared the cork cells he saw through his microscope to the small rooms [[monks]] lived in.[4][http://en.wikipedia.org/wiki/Cell_(biology)]

The word cell comes from the Latin cellula, [[meaning]], a small room. The descriptive term for the smallest living biological [[structure]] was coined by [https://en.wikipedia.org/wiki/Robert_Hooke Robert Hooke] in a [[book]] he published in 1665 when he compared the cork cells he saw through his microscope to the small rooms [[monks]] lived in.[4][https://en.wikipedia.org/wiki/Cell_(biology)]

==Quote==

==Quote==

You are a single living '''cell''' in a gigantic [[body]]. As such, you are carried along by life itself. On the [[physical]] of [[existence]], you know of the size of the [[universe]] and its [[motions]]. Yet within this almost [[absolute]] regularity, there is something of the next [[moment]] that [[our Father]] creates afresh and new. The living body of [[God]] continues to [[grow]]. And as you continue to grow, you can have this [[choice]] of what you will become. This is not [[foreordained]]. This is a true choice and you make it moment by [[moment]], day by day.[http://nordan.daynal.org/wiki/index.php?title=You_Can_Grow_Without_Limit-2004-11-15]

You are a single living '''cell''' in a gigantic [[body]]. As such, you are carried along by life itself. On the [[physical]] of [[existence]], you know of the size of the [[Master Universe|universe]] and its [[motions]]. Yet within this almost [[absolute]] regularity, there is something of the next [[moment]] that [[our Father]] creates afresh and new. The living body of [[God]] continues to [[grow]]. And as you continue to grow, you can have this [[choice]] of what you will become. This is not [[foreordained]]. This is a true choice and you make it moment by [[moment]], day by day.[https://nordan.daynal.org/wiki/index.php?title=You_Can_Grow_Without_Limit-2004-11-15]

==References==

==References==

# "... I could exceedingly plainly perceive it to be all perforated and porous, much like a Honey-comb, but that the pores of it were not regular [..] these pores, or cells, [..] were indeed the first microscopical pores I ever saw, and perhaps, that were ever seen, for I had not met with any Writer or Person, that had made any mention of them before this. . ." – Hooke describing his observations on a thin slice of cork. Robert Hooke

# "... I could exceedingly plainly perceive it to be all perforated and porous, much like a Honey-comb, but that the pores of it were not regular [..] these pores, or cells, [..] were indeed the first microscopical pores I ever saw, and perhaps, that were ever seen, for I had not met with any Writer or Person, that had made any mention of them before this. . ." – Hooke describing his observations on a thin slice of cork. Robert Hooke

==External links==

==External links==

* [http://publications.nigms.nih.gov/insidethecell/ Inside the Cell]

* [https://publications.nigms.nih.gov/insidethecell/ Inside the Cell]

* [http://vcell.ndsu.nodak.edu/animations/ Virtual Cell's Educational Animations]

* [https://vcell.ndsu.nodak.edu/animations/ Virtual Cell's Educational Animations]

* [http://www.studiodaily.com/main/searchlist/6850.html The Inner Life of A Cell], a flash video showing what happens inside of a cell  

* [https://www.studiodaily.com/main/searchlist/6850.html The Inner Life of A Cell], a flash video showing what happens inside of a cell  

* [http://www.ibiblio.org/virtualcell/tour/cell/cell.htm The Virtual Cell]

* [https://www.ibiblio.org/virtualcell/tour/cell/cell.htm The Virtual Cell]

* [http://www.cellsalive.com/ Cells Alive!]

* [https://www.cellsalive.com/ Cells Alive!]

* [http://www.jcb.org/ Journal of Cell Biology]

* [https://www.jcb.org/ Journal of Cell Biology]

* [http://www.biology.arizona.edu/cell_bio/cell_bio.html The Biology Project > Cell Biology]

* [https://www.biology.arizona.edu/cell_bio/cell_bio.html The Biology Project > Cell Biology]

* [http://www.centreofthecell.org/ Centre of the Cell online]

* [https://www.centreofthecell.org/ Centre of the Cell online]

* [http://cellimages.ascb.org/ The Image & Video Library of The American Society for Cell Biology], a collection of peer-reviewed still images, video clips and digital books that illustrate the structure, function and biology of the cell.

* [https://cellimages.ascb.org/ The Image & Video Library of The American Society for Cell Biology], a collection of peer-reviewed still images, video clips and digital books that illustrate the structure, function and biology of the cell.

* Gall JG, McIntosh JR, eds  (2001). ''[http://cellimages.ascb.org/cdm4/browse.php?CISOROOT=/p4041coll11 Landmark Papers in Cell Biology]''.  Bethesda, MD and Cold Spring Harbor, NY: The American Society for Cell Biology and Cold Spring Harbor Laboratory Press; 2001. Commentaries and links to original research papers published in the ASCB Image & Video Library

* Gall JG, McIntosh JR, eds  (2001). ''[https://cellimages.ascb.org/cdm4/browse.php?CISOROOT=/p4041coll11 Landmark Papers in Cell Biology]''.  Bethesda, MD and Cold Spring Harbor, NY: The American Society for Cell Biology and Cold Spring Harbor Laboratory Press; 2001. Commentaries and links to original research papers published in the ASCB Image & Video Library

[[Category: Biology]]

[[Category: Biology]]