Cell Mitosis Notes

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

3. M: mitosis (Cell divides)
G2: Cell doublechecks to make
sure DNA is
replicated and
cell has enough
organelles for
the upcoming
split
G1: Cell grows in
size.
S: Cell makes
identical copy
of its DNA

4. 




What are the three phases of
Interphase?
What happens during S phase?
What happens during G1 phase?
What happens during M phase?
What happens during G2 phase?

5. Animated Mitosis Cycle
http://www.cellsalive.com/mitosis.htm
• Interphase
• Prophase
• Metaphase
• Anaphase
• Telophase & Cytokinesis
http://highered.mcgraw-hill.com/olcweb/cgi/pluginpop.cgi?

6. •
•
Chromosomes are copied
(# doubles)
Chromosomes appear as
threadlike coils
(chromatin) at the start,
but the DNA and its copy
change to sister
chromatids at end of this
phase

7. Animal Cell
Plant Cell
Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

8. •
•
•
•
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.

9. Animal Cell
Plant Cell
Spindle fibers
Centrioles
Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

10. •
Chromatids (a pair of
identical
chromosomes) are
dragged to middle of
cell along the
metaphase plate.

11. Animal Cell
Plant Cell
Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

12. •
Chromatids (or pairs
of identical
chromosomes)
separate and begin
to move to opposite
ends of the cell.
Sister
chromatids

13. Animal Cell
Plant Cell
Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

14. •
•
•
Two new nuclei form.
Chromosomes unwind
into chromatin (threads
rather than rods).
Mitosis ends.

15. Animal Cell
Plant Cell
Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

16. •
Cell membrane
moves inward
to create two
daughter cells –
each with its
own nucleus
with identical
chromosomes.

17. Animal Mitosis -- Review
Interphase
Prophase
Metaphase
Anaphase
Telophase
Interphase

18. Plant Mitosis -- Review
Interphase
Prophase
Metaphase
Anaphase
Telophase
Interphase

19. 20

20. - Cell Division
21
21

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