Download - Mitosis/Cellular Division
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Mitosis.Created by E. Green09/03/2014
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Mitosis is also called Cell Division, why?During mitosis, the nucleus of
the cell divides, forming two nuclei with identical genetic information.
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Why is Mitosis important?Allow an organism to grow.
Repairs damaged cells/tissue.
Replace dead cells/tissue.
Reproduction in some simple organisms.
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Where does Mitosis take place? In all somatic cells (include all
body cells and excludes the sex cells – sperm/egg cells)
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The process of Mitosis consists of a few phases:
INTERPHASEPROPHASEMETAPHASEANAPHASETELOPHASE
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Interphase: Cell builds up enough energy for division
process. DNA replication occurs Cell look normal, like before division
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Prophase:Nuclear envelope and nucleolus
disappear.
Chromatin become more tightly coiled, and condenses into individual chromosomes. Chromosomes arrange randomly in the cell.
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continueCentrioli move to opposite poles,
with spindle fibers stretching between them.
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Metaphase: The centrioli reached the opposite poles
with the spindle fibers in between. The chromosomes arrange randomly on
the equator, each single chromosome attaching to a separate spindle fiber by means of the centromere.
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Anaphase: The spindle fibers pull tight. The centromeres attaching the
chromatids of the chromosomes split in half.
Daughter chromosomes move to opposite poles.
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Telophase: Daughter chromosomes reach poles. Nuclear envelope surrounds
chromosomes. Nucleolus reappear at each pole. Chromosomes become less condense
forming chromatin. Two identical nuclei has been formed.
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Continue… Invagination of the cytoplasm and
plasma membrane occurs. (Cleavage furrow forms in animal cells and a cytoplasmic plate forms in plant cells)
Continues until the cell in divided into 2 separate cells. (Identical to one another and to the original cell)
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The Mitosis process:
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Tips:Definition of mitosis.Know where it occurs.Know importance of mitosis.Name and discuss the different
phases.Draw and label each phase.
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Something interesting!http://www.youtube.com/watch?v=DD3IQknCEdc
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Sources: Images: http://obsickboy2.files.wordpress.com/2
010/10/mitosis.jpg http://www.lentigen.com/images/somati
c_overview_graphic.jpg http://www.lentigen.com/images/somati
c_overview_graphic.jpg http://img.tfd.com/dorland/thumbs/mito
sis.jpg http://media-cache-ec0.pinimg.com/73
6x/50/f2/a3/50f2a33d2e5648cfb58883d85b90173b.jpg
http://media-cache-ak0.pinimg.com/736x/e9/8a/59/e98a5923fb6cd584c37d4be42db0ca55.jpg
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Continue… http
://www.slideshare.net/mnorthrup2718/mitosis-10163181?qid=f0c8e355-a3d4-4847-aad6-1ba169a63d8c&v=default&b=&from_search=2
http://www.slideshare.net/SSpencer53/mitosis-25337539?qid=f0c8e355-a3d4-4847-aad6-1ba169a63d8c&v=default&b=&from_search=7
http://www.slideshare.net/farrellw/mitosis-powerpoint-11216292
http://www.slideshare.net/kpytel/mitosis-notes-52-27298621
Williamson,J.,(2013). Class notes.