Cell Cycle interphase And Mitosis
Rabu, 20 November 2013
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| Cell cycle includes interphase and mitosis |
Every cell ha
particular cycle. Cell cycle is divided into two general phases, interphase and
mitosis' Interphase is a phase that needs the longest
period of time' Interphase in mammal tissues, generally,
occurs about 12 to 24 hours. In
this phase, there occurs growth
and preparation for division.
During interphase,
cell metabolism activity is very
high and cell does many functions.
In this phase, cell size becomes larger caused by cell growth, protein synthesis, and cell organelle duplication.
Interphase can be distinguished into 3 sub-phases, G1 , S
and G2 . It the three sub-phases, cells undergo growing
process. Specifically, in G1 phase, cell size becomes larger due to
the cell growth. In S phase' there occurs
chromosome duplication and DNA
synthesis (DNA replication) Chromosomes that at first was single strand, finally
changes into double strand. In G2
phase, cell grows perfectly as a
preparation for cell division.
Mitosis is a cell division phase to produce somatic cell. The phase
occurs about 100% of all time required
by cell cycle or about 2 hours.
Before the mitosis stage ends, there
is constriction formation in cytoplasm
that finally divisions the
cytoplasm into two parts. It is called Cytokinesis. After somatic cell is formed, the cells will undergo growing Process. In this case, cell cycle starts all over again
Source: Essential Biology, 2006.
Source: Essential Biology, 2006.
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