Mitosis and Cytokinesis Chapter 6.3. The Cell Cycle The Cell Cycle is a repeating sequence of...
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Transcript of Mitosis and Cytokinesis Chapter 6.3. The Cell Cycle The Cell Cycle is a repeating sequence of...
![Page 1: Mitosis and Cytokinesis Chapter 6.3. The Cell Cycle The Cell Cycle is a repeating sequence of cellular growth & division during the life of an organism.](https://reader035.fdocuments.us/reader035/viewer/2022070403/56649f315503460f94c4bc92/html5/thumbnails/1.jpg)
Mitosis and Cytokinesis
Chapter 6.3
![Page 2: Mitosis and Cytokinesis Chapter 6.3. The Cell Cycle The Cell Cycle is a repeating sequence of cellular growth & division during the life of an organism.](https://reader035.fdocuments.us/reader035/viewer/2022070403/56649f315503460f94c4bc92/html5/thumbnails/2.jpg)
The Cell Cycle
The Cell Cycle is a repeating sequence of cellular growth & division during the life of an organism.
![Page 3: Mitosis and Cytokinesis Chapter 6.3. The Cell Cycle The Cell Cycle is a repeating sequence of cellular growth & division during the life of an organism.](https://reader035.fdocuments.us/reader035/viewer/2022070403/56649f315503460f94c4bc92/html5/thumbnails/3.jpg)
Pre Mitosis- InterphasePhase of cell division when the cell
copies its DNA grows larger & prepares to divide.
A cell spends 90% of its lifetime in Interphase
There are 3 sections of Interphase: G1, S, and G2
![Page 4: Mitosis and Cytokinesis Chapter 6.3. The Cell Cycle The Cell Cycle is a repeating sequence of cellular growth & division during the life of an organism.](https://reader035.fdocuments.us/reader035/viewer/2022070403/56649f315503460f94c4bc92/html5/thumbnails/4.jpg)
Interphase- G1 Phase
“G1” Phase= First Growth phase90% of the cells life is spent in the G1 phase\Carries out routine functions, growsSome muscle and nerve cells never leave this
stage… what does this mean?
![Page 5: Mitosis and Cytokinesis Chapter 6.3. The Cell Cycle The Cell Cycle is a repeating sequence of cellular growth & division during the life of an organism.](https://reader035.fdocuments.us/reader035/viewer/2022070403/56649f315503460f94c4bc92/html5/thumbnails/5.jpg)
Interphase- “S” phase“S” phase = Synthesis PhaseDNA is copied
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Interphase- G2 Phase
“G2” Phase= 2nd Growth PhaseMicrotubules form to prepare for divisionMicrotubules- Hollow protein fibers that help
pull chromosomes apart
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Mitosis!Mitosis- Process of cell division where the
nucleus dividesOccurs in 4 Steps
ProphaseMetaphaseAnaphaseTelophase
![Page 8: Mitosis and Cytokinesis Chapter 6.3. The Cell Cycle The Cell Cycle is a repeating sequence of cellular growth & division during the life of an organism.](https://reader035.fdocuments.us/reader035/viewer/2022070403/56649f315503460f94c4bc92/html5/thumbnails/8.jpg)
Mitosis Stage 1- ProphaseNucleus Breaks DownSpindle Forms to pull microtubulesChromosomes are visible
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Mitosis Stage 2- MetaphaseChromosomes line up at the equator
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Mitosis Stage 3- AnaphaseChromosomes splitChromosomes are pulled to opposite sides of
the cell
![Page 11: Mitosis and Cytokinesis Chapter 6.3. The Cell Cycle The Cell Cycle is a repeating sequence of cellular growth & division during the life of an organism.](https://reader035.fdocuments.us/reader035/viewer/2022070403/56649f315503460f94c4bc92/html5/thumbnails/11.jpg)
Mitosis Stage 4- TelophaseThe Nucleus reappearsThe cell begins to split
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Post Mitosis- CytokinesisThe cell splits into two cells by:
Cleavage Furrow- occurs in animal cells/ cells without cell walls
Cell Plate Formation- occurs in plant cells/ cells with cell walls
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IMPORTANT !!!!!!!!!Interphase and Cytokinesis are NOT
considered Mitosis!MITOSIS is ONLY…
PROPHASEMETAPHASEANAPHASETELOPHASE