mitosis/cellular division
DESCRIPTION
Brief explanation of Mitosis.TRANSCRIPT
Mitosis.Created by E. Green09/03/2014
Mitosis is also called Cell Division, why?During mitosis, the nucleus of
the cell divides, forming two nuclei with identical genetic information.
Why is Mitosis important?Allow an organism to grow.
Repairs damaged cells/tissue.
Replace dead cells/tissue.
Reproduction in some simple organisms.
Where does Mitosis take place? In all somatic cells (include all
body cells and excludes the sex cells – sperm/egg cells)
The process of Mitosis consists of a few phases:
INTERPHASEPROPHASEMETAPHASEANAPHASETELOPHASE
Interphase: Cell builds up enough energy for division
process. DNA replication occurs Cell look normal, like before division
Prophase:Nuclear envelope and nucleolus
disappear.
Chromatin become more tightly coiled, and condenses into individual chromosomes. Chromosomes arrange randomly in the cell.
continueCentrioli move to opposite poles,
with spindle fibers stretching between them.
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.
Anaphase: The spindle fibers pull tight. The centromeres attaching the
chromatids of the chromosomes split in half.
Daughter chromosomes move to opposite poles.
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.
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)
The Mitosis process:
Tips:Definition of mitosis.Know where it occurs.Know importance of mitosis.Name and discuss the different
phases.Draw and label each phase.
Something interesting!http://www.youtube.com/watch?v=DD3IQknCEdc
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
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.