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Cell Biology/Cell division/Cell cycle
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Cell Biology/Cell division/Cell cycle
The normal cell cycle consists of 2 major stages. The first is Interphase, during which the cell lives and grows larger.
The second is Mitotic Phase. Interphase is composed of three subphases. G1 phase (first gap), S phase (synthesis),
and G2 phase (second gap). The interphase is the growth of the cell. The normal cell functions of creating proteins
and organelles. The Mitotic Phase is composed of Mitosis and Cytokinesis. Mitosis, when the cell divides. Mitosis
can be further divided into multiple phases. Cytokinesis, which is when the two daughter cells complete their
separation. There is some overlap between there two sub phases.
From Wikipedia
The cell cycle is the cycle of a biological cell, consisting of repeated mitotic cell division and interphase (the growth
phase). A cell spends the overwhelming majority of its time in the interphase(about 90% of time).
Overview
The cell cycle consists of
• G1 phase, the first growth phase
• S phase, during which the DNA is replicated, where S stands for the
Synthesis of DNA.
• G2 phase is the second growth phase, also the preparation phase for
the
• M phase or mitosis and cytokinesis, the actual division of the cell
into two daughter cells
The cell cycle stops at several checkpoints and can only proceed if
certain conditions are met, for example, if the cell has reached a certain
diameter. Some cells, such as neurons, never divide once they become
locked in a G0 phase.
Details of mitosis
Schematic of interphase (brown) and mitosis
(yellow).
Schematic of the cell cycle. I=Interphase,
M=Mitosis. The duration of mitosis in relation to
the other phases has been exaggerated in this
diagram.
Article Sources and Contributors
Article Sources and Contributors
Cell Biology/Cell division/Cell cycle Source: http://en.wikibooks.org/w/index.php?oldid=1896790 Contributors: Adrignola, Andreas Ipp, Emperorbma, Herbythyme, Jguk, Karl Wick, Monk,
Robinson0120, Theresa knott, 8 anonymous edits
Image Sources, Licenses and Contributors
File:cell_cycle.png Source: http://en.wikibooks.org/w/index.php?title=File:Cell_cycle.png License: GNU Free Documentation License Contributors: Pamri, Snek01, TimVickers, 9 anonymous
edits
File:interphase_mitosis.png Source: http://en.wikibooks.org/w/index.php?title=File:Interphase_mitosis.png License: Creative Commons Attribution-Sharealike 2.5 Contributors: User:Magnus
Manske
License
Creative Commons Attribution-Share Alike 3.0 Unported
http:/ / creativecommons. org/ licenses/ by-sa/ 3. 0/
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