11
Cell Division

Cell Divisionthomascallscience.weebly.com/.../8/9128444/cell_division.pdf · 2020. 3. 19. · Mitosis$ • The$process$in$cell$division$by$which$the$ nucleus$divides$resul

  • Upload
    others

  • View
    1

  • Download
    0

Embed Size (px)

Citation preview

Page 1: Cell Divisionthomascallscience.weebly.com/.../8/9128444/cell_division.pdf · 2020. 3. 19. · Mitosis$ • The$process$in$cell$division$by$which$the$ nucleus$divides$resul

Cell Division

Page 2: Cell Divisionthomascallscience.weebly.com/.../8/9128444/cell_division.pdf · 2020. 3. 19. · Mitosis$ • The$process$in$cell$division$by$which$the$ nucleus$divides$resul

Cell  Division  

•  All  cells  must  divide  to  create  new  cells.    •  This  is  true  for  bacteria,  animal,  plant,  fungi,  and  pro<sta  cells.    

Page 3: Cell Divisionthomascallscience.weebly.com/.../8/9128444/cell_division.pdf · 2020. 3. 19. · Mitosis$ • The$process$in$cell$division$by$which$the$ nucleus$divides$resul

Types  of  Cell  Division  

•  Mitosis  –  a  cell  dividing  to  produce  iden<cal  new  cells.  

•  Meiosis  –cell  division  that  happens  during  reproduc<on.  

•  Binary  fission  –  cell  division  by  bacteria  

Page 4: Cell Divisionthomascallscience.weebly.com/.../8/9128444/cell_division.pdf · 2020. 3. 19. · Mitosis$ • The$process$in$cell$division$by$which$the$ nucleus$divides$resul

Mitosis  

•  The  process  in  cell  division  by  which  the  nucleus  divides  resul<ng  in  two  new  nuclei  

•  Almost  all  of  the  cells  in  your  body  use  mitosis:  skin,  stomach,  muscle  

Page 5: Cell Divisionthomascallscience.weebly.com/.../8/9128444/cell_division.pdf · 2020. 3. 19. · Mitosis$ • The$process$in$cell$division$by$which$the$ nucleus$divides$resul

The  steps  of  mitosis  

•  Cells  go  through  6  steps  when  spliEng  through  mitosis.    

Page 6: Cell Divisionthomascallscience.weebly.com/.../8/9128444/cell_division.pdf · 2020. 3. 19. · Mitosis$ • The$process$in$cell$division$by$which$the$ nucleus$divides$resul

Interphase  

•  Living  stage  of  a  cell.  Cell  is  not  reproducing.  •  Chromosomes  are  loose  within  the  nucleus  

Page 7: Cell Divisionthomascallscience.weebly.com/.../8/9128444/cell_division.pdf · 2020. 3. 19. · Mitosis$ • The$process$in$cell$division$by$which$the$ nucleus$divides$resul

Prophase  

•  The  chromosomes  become  visible  •  Centrioles  move  to  the  opposite  end  of  the  cell  •  thread-­‐like  fibers  stretch  across  the  cell  •  The  nucleus  membrane  dissolves  

Page 8: Cell Divisionthomascallscience.weebly.com/.../8/9128444/cell_division.pdf · 2020. 3. 19. · Mitosis$ • The$process$in$cell$division$by$which$the$ nucleus$divides$resul

Metaphase  

•  The  duplicate  chromosomes  move  to  the  middle  of  the  cell  

Page 9: Cell Divisionthomascallscience.weebly.com/.../8/9128444/cell_division.pdf · 2020. 3. 19. · Mitosis$ • The$process$in$cell$division$by$which$the$ nucleus$divides$resul

Anaphase  

•  The  duplicate  chromosomes  split  apart  

Page 10: Cell Divisionthomascallscience.weebly.com/.../8/9128444/cell_division.pdf · 2020. 3. 19. · Mitosis$ • The$process$in$cell$division$by$which$the$ nucleus$divides$resul

Telophase  

•  A  new  nuclear  membrane  forms  around  each  set  of  duplicate  chromosomes,  crea<ng  two  new  nuclei    

 

Page 11: Cell Divisionthomascallscience.weebly.com/.../8/9128444/cell_division.pdf · 2020. 3. 19. · Mitosis$ • The$process$in$cell$division$by$which$the$ nucleus$divides$resul

cytokinesis  

•  The  organelles  organize  themselves  around  the  two  new  nuclei    

•  The  cytoplasm  splits  forming  two  new  cells