This document provides information about cell division through mitosis and cytokinesis. It begins with definitions of key terms like interphase, prophase, metaphase, anaphase, telophase, and cytokinesis. Images and descriptions are provided of each stage of mitosis in animal and plant cells. The roles of the centrioles, spindle fibers, chromatids, and chromosomes are explained. The final stages of cytokinesis are described, with plants noted to form a cell plate rather than dividing through inward movement. Review questions are included to test understanding of mitosis.

1.  When you see green text – read carefully –
copy if you want
 When you see white text – ALL students
copy
 When you see yellow text – Honors students
copy

2. How do little elephants grow up to be BIG
elephants?

3. • Multicellularity
• We all start out as
a single cell
• Key Concept:
Growth occurs when
more cells are
made, NOT
because cells get
bigger.

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

5. Mitosis Notes
• Interphase
• Prophase
• Metaphase
• Anaphase
• Telophase & Cytokinesis
The cell life cycle
consists of:
Don’t draw this

7.  What are the three phases of
Interphase?
 What happens during G1 phase?
 What happens during S phase?
 What happens during G2 phase?

8. • Chromosomes are copied
(# doubles)
• Chromosomes (DNA)
appear as threadlike
spaghetti called
chromatin
Draw this

9. Animal Cell Plant Cell
Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
Don’t draw thisDon’t draw this

10. • Nucleus starts to
disappear.
• Chromatin coils to
become chromosomes.
• Centrioles (or poles)
appear and begin to
move to opposite end
of the cell.
• Spindle fibers form
between the poles.
centriole
Draw this

11. Animal Cell Plant Cell
Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
Spindle fibers
Centrioles
Don’t draw thisDon’t draw this

12. • Chromatids are
dragged to middle of
cell along the
metaphase plate.
Centriole
Don’t draw this

13. Animal Cell Plant Cell
Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
Don’t draw this Don’t draw this

14. • Chromatids (or pairs
of homologous
chromosomes)
separate and begin
to move to opposite
ends of the cell.
Sister
chromatids
Draw this

15. Animal Cell Plant Cell
Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
Don’t draw thisDon’t draw this

16.  What are the
steps of
mitosis?
 What is the
spaghetti –like
DNA called?
 What is the
coiled,
bundled DNA
called?

17. • Two new nuclei form.
• Chromosomes unwind
into chromatin (threads
instead of bundles).
• Mitosis ends.
Draw this

18. Animal Cell Plant Cell
Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
Don’t draw this Don’t draw this

19. • Cell
membrane
moves inward
to create two
daughter cells
– each with its
own nucleus.
Draw this

20. Cytokinesis is different in plants!
The cell wall makes plant cells rigid, so they can’t move inward and separate like
animal cells can.
Vesicles filled with cell wall parts are towed to the middle of the cell.
They fuse together, forming a “cell plate.”
The cell plate becomes the new cell wall. Honors draw this

23. Animal Mitosis -- Review
Interphase Prophase
Metaphase Anaphase
Telophase Interphase
Don’t draw these – study them carefully

24. Plant Mitosis -- Review
Interphase Prophase
Metaphase Anaphase
Telophase Interphase
Don’t draw these – study them carefully

25. • IInterphase I
• PProphase Pray
• MMetaphase More
• AAnaphase At
• TTelophase The
• CCytokinesis Church
REMEMBER ALL THE
STEPS OF MITOSIS!

26. 26

27.  What is binary
fission?
 Why does the DNA
need to move to
either side of the cell
before the cell
divides?

28.  What is binary
fission?
 Binary fission is
bacteria’s
version of cell
division.
 Why does the DNA
need to move to either
side of the cell before
the cell divides?
 DNA needs to be on
opposite sides of the
cell because when the
cell splits in two each
new cell needs its own
copy of DNA

29. 29
Quiz time! Can you fill in the blanks?
29

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