Schmidt Russell

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By: Russell Schmidt
1.Interphase

micro.magnet.fsu.edu
http://www.ias.unt.edu/~tpp001/interphase
In this phase the cells start to grow. 90% of the cells life is spent in this
phase. The cell starts to replicate its DNA. The cell also prepares to divide.
Definition:interphase
[in′tərfās′]
Etymology: L, inter + Gk, phasis, phase
the stage in the cell cycle during which the cell is not dividing, the chromosomes are not individually distinguishable, and such
biochemical and physiologic activities as DNA synthesis occur. Interphase follows telophase of one cell division and extends to the
beginning of prophase of the next division. See also anaphase, interkinesis, karyostasis, metaphase, mitosis, prophase, telophase
.
2.Mitosis

1.Prophase
2.Metaphase
3.Anaphase
4.Telophase
(mī-tō'sĭs)
n. Biology, pl., -ses (-sēz).1. The process in cell division by which the nucleus
divides, typically consisting of four stages, prophase, metaphase, anaphase,
and telophase, and normally resulting in two new nuclei, each of which
contains a complete copy of the parental chromosomes. Also called
karyokinesis.
2. The entire process of cell division including division of the nucleus and the
cytoplasm
Prophase

http://micro.magnet.fsu.edu/cells/fluorescencemitosis/prophaselar
ge.html
http://micro.magnet.fsu.edu/cells/fluorescencemitosis/anaphase2larg
e.html
This the first of four phases in Mitosis. In this phase the nucleus starts to
dissolve and the chromatin start to coil up into to rods that stretch across the
cell.
pro·phase (prfz)
n.
1. The first stage of mitosis, during which the chromosomes condense and
become visible, the nuclear membrane breaks down, and the spindle
apparatus forms at opposite poles of the cell.
2. The first stage of meiosis, constituted by a series of events that include the
thickening and coiling of the chromosomes, synapsis of homologous
chromosomes, tetrad formation, and crossing over.
Metaphase

http://www.macroevolution.net/metaphase.ht
ml
http://en.wikipedia.org/wiki/File:Metaphas
e.png
In this part of Mitosis the rods of chromatin start to line up in the center of the cell.
Spindle fibers start form from asters on each side of the cell.
metaphase
[met′əfāz]
Etymology: Gk, meta + phasis, appearance
the second of the four stages of nuclear division in mitosis and in each of the
two divisions of meiosis, during which the chromosomes become arranged in
the equatorial plane of the spindle to form the equatorial plate, with the
centromeres attached to the spindle fibers in preparation for separation. See
also anaphase, interphase, meiosis, mitosis, prophase, telophase.
Anaphase

http://micro.magnet.fsu.edu/cells/fluorescencemitosis/anaphase2larg
e.html
http://www.sparknotes.com/biology/cellreproduction/mitosis/sectio
n2.rhtml
The spindle fibers start to connect to the centromere. Then they start to split
the crotomatids into two chromosomes on each side of the cell.
anaphase [ˈænəˌfeɪz]
n
1. (Life Sciences & Allied Applications / Biology) the third stage of mitosis,
during which the chromatids separate and migrate towards opposite ends of
the spindle See also prophase, metaphase, telophase
2. (Life Sciences & Allied Applications / Biology) the corresponding stage of
the first division of meiosis
Telophase

http://micro.magnet.fsu.edu/cells/fluorescencemitosis/telophase1large.html
http://www.sparknotes.com/biology/cellreproduction/mitosis/section3.rhtml
The nuclear membrane and nucleolous reappear. Chromosomes loosen up
and become chromatids.
telophase (tl-fz)
The final phase of cell division, in which membranes form around the two groups of
chromosomes, each at opposite ends of the cell, to produce the two nuclei of the
daughter cells. The spindle disappears, and the cytoplasm usually divides (in the
process called cytokinesis). In mitosis, telophase is preceded by anaphase. In meiosis,
telophase occurs twice, once as part of the first meiotic division (when it is usually
called telophase I) and once during the second meiotic division (when it is usually
called telophase II). During telophase I, the members of pairs of homologous
chromosomes which have separated during anaphase I (anaphase of the first meiotic
division) regroup at the two ends of the cell. During telophase II, the individual
chromatids that separated during anaphase II (anaphase of the second meiotic
division) regroup at the ends of the cell. See more at meiosismitosis
Cytokinesis

http://www.sciencephoto.com/media/147997/enlarge
http://www.edupic.net/cells.htm
The cytoplasm separates and each side becomes its own cell.
cy·to·ki·ne·sis (st-k-nss, -k-)
n.
The division of the cytoplasm of a cell following the division of the nucleus
Table

Stage
Purpose of stage
Facts
1.Interphase
The cell develops and grows.
90% of cells life is
spent in this stage.
2.Mitosis
The cell starts to prepare to split.
Has Four stages.
Prophase
Nuclear membrane starts to dissolve and the DNA replicates.
Metaphase
The chromatin start to form in the center of cell and spindle
fibers start to form from the asters.
Anaphase
The spindle fibers start to connect to the centromere and split
it into two chromosomes.
Telophase
Nucleolous and nuclear membrane reappear and separate
evenly on both sides.
3.Cytokinesis
The cytoplasm separates and each side becomes its own cell.
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