cell cycle
DESCRIPTION
Cell Cycle. http://alevelnotes.com/content_images/i77_dwa_1_mitosis.gif. Interphase. 90% of cell life in this stage g rows DNA replicates (exact copy) p repares to divide. - PowerPoint PPT PresentationTRANSCRIPT
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Cell Cycle
http://alevelnotes.com/content_images/i77_dwa_1_mitosis.gif
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Interphase
• 90% of cell life in this stage• grows• DNA replicates (exact copy)• prepares to divide
http://faculty.clintoncc.suny.edu/faculty/michael.gregory/files/bio%20101/bio%20101%20lectures/mitosis/whitefish_mitosis_interphase_X_400_small.jpg http://local.brookings.k12.sd.us/biology/images/mitosis-animated.gif
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Mitosis
This stage has four stages within itself. These stages are: • Prophase • Metaphase• Anaphase• Telophase
http://img.tfd.com/dorland/thumbs/mitosis.jpg
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Prophase
http://www.microscopy-uk.org.uk/mag/imgnov04macro/prophase.jpg http://www.monteweston.com/Biology/Bio/label41.jpg
• nuclear membrane and nucleolus disappear• spindle fibers (ropes) appear• see duplicated chromosomes
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Metaphase
http://www.clker.com/cliparts/b/d/e/f/12641392951083079626Metaphase_procariotic_mitosis.svg.hi.pnghttp://student.ccbcmd.edu/~gkaiser/biotutorials/dna/mitosis/images/metaphase1_pc.jpg
• Duplicative chromosomes• Sister chromatids on either sides
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Anaphase
• sister chromatids separate • move to opposite sides
http://thumbs.dreamstime.com/thumblarge_448/12567407355rx4OM.jpghttp://www2.sunysuffolk.edu/gambier/micrographs/anaphaseI2.JPG
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Telophase
• nuclear membrane and nucleolus reappear• chromosomes loosen up and become chromatin
http://www.baileybio.com/plogger/thumbs/lrg-207-telophase_-_animal_cell__whitefish_blastula_.jpg
http://www.phschool.com/science/biology_place/biocoach/images/meiosis/metel1.gif
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Cytokensis
• division of cytoplasm• always moving to the next stage
http://www.biologycorner.com/resources/cytokinesis.gifhttp://botit.botany.wisc.edu/Resources/Botany/Mitosis/Allium/telophase%20cytokinesis.jpg
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Cell Cycle SummaryInterphase DNA makes an exact copy of itself and prepares to divide.
Mitosis Prophase Nuclear membrane & nucleolus disappear and spindle fibers appear.
Metaphase Duplicative chromosomes with sister chromatids on either sides.
Anaphase Sister chromatids separate and move to opposite ends.
Telophase Nuclear membrane and nucleolus reappear and chromosomes loosen up and become chromatin.
Cytokensis Division of cytoplasm.