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Cell Cycle

Skin cancer - the abnormal growth of skin cells - most often develops on skin exposed to the sun.

Cell that reproduce by asexual reproduction reproduce constantly.

Animated Cell Cyclehttp://www.cellsalive.com/mitosis.htm

• Interphase

• Prophase

• Metaphase

• Anaphase

• Telophase & Cytokinesis

Stage 1- Interphase Longest part of cell life Cell carries out normal

activities DNA in long strands called

chromatin Centrioles as a pair

Centrioles

• Chromatin doubles to form chromosomes (# doubles)

• Other cell parts also double• Editing of DNA to repair errors

CELL MEMBRANENucleus

Cytoplasm

Late Interphase

Centrioles

Animal Cell Plant Cell

Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

• Chromosomes coil and become visible• Centrioles (or poles) appear and begin to

move to opposite end of the cell. Spindle fibers form between the poles.

• Nuclear membrane disappears.Centrioles

Sister chromatids

Spindle fibers

Stage II- MitosisPhase # 1- Prophase

Animal Cell Plant Cell

Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

Spindle fibers

Centrioles

• Chromosomes line up in the middle of the cell on the spindle fibers.

Centrioles

Spindle fibers

Phase # 2- Metaphase

Animal Cell Plant Cell

Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

• Chromatids (or halves of chromosomes) separate and begin to move to opposite ends of the cell.

Centrioles

Spindle fibers

Phase # 3- Anaphase

Animal Cell Plant Cell

Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

• Chromatids finish separating. • Nuclear membrane reforms• Chromatids unwind and become

chromatin.

NucleiNuclei

Chromatin

Phase # 4 - Telophase

Animal Cell Plant Cell

Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

• Cytoplasm and cell organelles divide evenly

• Two new cells are formed

STAGE III - Cytokinesis

Animal Cell Cycle -- ReviewInterphase

                                              

              

Prophase

                                             

                Metaphase

                                              

              

Anaphase

                                             

                Telophase

                                              

              

Interphase

                                             

               

Plant Cell Cycle -- ReviewInterphase

                                                        

    

Prophase

                                                       

     Metaphase

                                                        

    

Anaphase

                                                       

     

Telophase

                                                        

    

Interphase

                                                       

     

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http://www.cellsalive.com/mitosis.htm