Download Centrosome - English at the Shore Spot

Centrioles and Centrosomes
Chandler Kolb
Honors Biology Green 2
Edouard Van Beneden
& Theodor Boveri
• 1876-1888
• Edouard van Beneden discovered the
centriole
• –experimented with chromosomes
• Theodor Boveri named the region
centrosome (especial organ of cell
division)
- experimented with fertilization of a
zygote
Structure
• Centrosome- “Microtubule
Organizing Center”
• Centriole- small organelle that has
three sets of nine fused microtubules
• Microtubules- tubular
cytoplasmic filament
composed of protein
tubulin
Location
Function
• Cell division (Centrosomes)
• Mitosis- produces two daughter cells
identical to the parent cell
• cilia and flagella (centrioles)
• the position if the centrioles
determines the position of the nucleus a
 crucial role in the spatial
arrangement of cell organelles
Mitosis
• Four phases: Prophase,
Metaphase, Anaphase, and
Telophase
• Create a Spindle Apparatus
•
http://faculty.clintoncc.suny.edu/faculty/michael.gregory/files/bio%20101/Bio%201
01%20Lectures/Mitosis/mitosis.htm
•
..\..\Pictures\Cell Organelle Projects\Mitosis.exe
Animal or Plant Cell?
• Centrosomes are found in both
• Centrioles are only in animal cells
• Plants still perform
• Why? Cilia and flagella for cells
are surface features used for cell
movement, cells in plants aren’t
required to move around like
those in animal cells
Efficiency
• Centrosomes aren't necessary for cell
division, however they greatly increase
the efficiency
• Think about how many cells reproduce
daily…
• An inability of cells to use centrioles to
make functional cilia and flagella a
number of genetic and developmental
diseases
Works Cited
•
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/C/Cytoskeleton.html#microtubules
-7 November 2009
•
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2634415/
-2008
•
http://www.biology.arizona.edu/cell_bio/tutorials/cell_cycle/cells3.html
-October 2004
•
http://faculty.clintoncc.suny.edu/faculty/michael.gregory/files/bio%20101/Bio%20101%20Lectures/Mitosis/mitosi
s.htm
-2009
•
http://www.absoluteastronomy.com/topics/Centrosome
-2009
•
http://en.wikipedia.org/wiki/Centrosome
-17 November 2009
•
http://www.newworldencyclopedia.org/entry/Centriole
- 22 July 2008
•
http://8e.devbio.com/article.php?ch=7&id=75
•
http://www.cod.edu/people/faculty/fancher/CellStructure.htm
-Sept 2004
•
http://en.wikipedia.org/wiki/Centrosome
- 17 November 2009