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Understanding Cell Cycle: Surface Area, Volume Ratios, and Mitosis Dynamics

Explore the cellular processes involved in the cell cycle, which encompasses the life of a cell from division to division. This includes critical phases such as Interphase, Mitosis, and Cytokinesis. We delve into the significance of surface area to volume ratios, how they affect cell size, and the mechanics of cell division including the formation of spindles and chromosomal behaviors through the stages of Prophase, Metaphase, Anaphase, and Telophase. Gain insights into phenomena like contact inhibition, and understand the implications of uncontrolled cell division, such as cancer.

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Understanding Cell Cycle: Surface Area, Volume Ratios, and Mitosis Dynamics

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Presentation Transcript

  1. C e l l C y c l e

  2. Ratio of Surface Area to Volume in Cells Cell Size Surface Area (length x width x 6) Volume (length x width x height) Ratio of Surface Area to Volume Go to Section:

  3. Cell Cycle • The cell cycle represents recurring events that take place in the period of time from the beginning of one cell division to the beginning of the next. In addition to cell division, the cell cycle includes periods when the cell is growing and actively producing materials it needs for the next division. Go to Section:

  4. M phase (Mitosis) Interphase G1 phase S phase G2 phase Prophase Metaphase Anaphase Telophase Cell Cycle includes is divided into is divided into Go to Section:

  5. G1 phase M phase S phase G2 phase Go to Section:

  6. Spindle forming Centrioles Centromere Chromatin Centriole Nuclear envelope Chromosomes (paired chromatids) Interphase Prophase Spindle Cytokinesis Centriole Metaphase Individual chromosomes Telophase Anaphase Nuclear envelope reforming Go to Section:

  7. I n t e r p h a s e • n o r m a l c e l l a c t i v i t y

  8. M i t o s i s After D N A i s d u p l i c a t e d It is d i v i d e d i n t o t w o i d e n t i c a l s e t s .

  9. Spindle forming Centrioles Centromere Chromatin Centriole Nuclear envelope Chromosomes (paired chromatids) Interphase Prophase Spindle Cytokinesis Centriole Metaphase Individual chromosomes Telophase Anaphase Nuclear envelope reforming Go to Section:

  10. P r o p h a s e • c h r o m a t i n c o n d e n s e s i n to c h r o m o s o m e s • n u c l e a r m e m b r a n e d i s a p p e a r s

  11. Spindle forming Centrioles Centromere Chromatin Centriole Nuclear envelope Chromosomes (paired chromatids) Interphase Prophase Spindle Cytokinesis Centriole Metaphase Individual chromosomes Telophase Anaphase Nuclear envelope reforming Go to Section:

  12. M e t a p h a s e • c h r o m o s o m e s • l i n e u p a t t h e • c e l l e q u a t o r

  13. Spindle forming Centrioles Centromere Chromatin Centriole Nuclear envelope Chromosomes (paired chromatids) Interphase Prophase Spindle Cytokinesis Centriole Metaphase Individual chromosomes Telophase Anaphase Nuclear envelope reforming Go to Section:

  14. A n a p h a s e • c h r o m o s o m e s m o v e t o • o p p o s i t e e n d s • o f t h e c e l l

  15. Spindle forming Centrioles Centromere Chromatin Centriole Nuclear envelope Chromosomes (paired chromatids) Interphase Prophase Spindle Cytokinesis Centriole Metaphase Individual chromosomes Telophase Anaphase Nuclear envelope reforming Go to Section:

  16. T e l o p h a s e • c h r o m o s o m e s d i s a p p e a r • n u c l e a r m e m b r a n e r e f o r m s • c e l l b e g i n s t o d i v i d e

  17. Spindle forming Centrioles Centromere Chromatin Centriole Nuclear envelope Chromosomes (paired chromatids) Interphase Prophase Spindle Cytokinesis Centriole Metaphase Individual chromosomes Telophase Anaphase Nuclear envelope reforming Go to Section:

  18. Contact Inhibition Go to Section:

  19. A sample is injected into a second cell in G2 of interphase. A sample of cytoplasm is removed from a cell in mitosis. As a result, the second cell enters mitosis. Go to Section:

  20. C a n c e r • U n c o n t r o l l e d C e l l D i v i s i o n

  21. S p r e a d o f C a n c e r

  22. C e l l C y c l e E n d

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