Download mitosis

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Concluding the lesson the students will:
› Review procedures learned and practice
two new ones.
› Identify the phases of the process of Mitosis.
› Explain what happens in each phase
 Raise
hand to ask to move around the room
 Do not ask permission to stand up in the
middle of a discussion, unless is an
emergency.
 Make good decisions, do not interrupt
discussion and lecture time
 Sharpen pencils during individual time or
immediately you arrive; get tissues at your
discretion
 Dispose of garbage at the end of the class.
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Be sure your papers are properly labeled with the name,
class and date.
Pass the papers across the row to your left.
If / When you receive a paper, place yours on top and
continue passing the stack.
The first person in the row will neatly organize the papers
and hand them to me.
All papers are turned into the tray in the folders labeled for
your class unless you are given different instructions.
All work is due when called for. Work not turned at this
time will be late and will not receive full credit.
Check the AGENDA to see if a paper is due at the beginning
of class.
There are two trays for each group
Hand in homework assignments to the tray marked HW .
Hand in class work assignment to the tray marked CLASS
WORK .
 Sample
Heading:
Name: Juan Perez
Group:
month/day/year
student # ______
Mrs. Perez
“HOMEWORK or LABORATORY TITLE”
___________________________________________________
___________________________________________________
Big Idea:
Mitosis is the process in which
the nucleus divides to form two
new nuclei and two cells with
identical DNA.
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How do little elephants grow up
to be BIG elephants?
Mitosis begins after
fertilization
1 cell becomes 2 cells, becomes
4 cells…becomes TRILLIONS
Why do cells make more cells?
Animated Mitosis Cycle
http://www.cellsalive.com/mitosis.htm
• Interphase
• Prophase
• Metaphase
• Anaphase
• Telophase & Cytokinesis
Chromosomes are copied (# doubles)
• Chromosomes appear as threadlike coils
(chromatin) at the start, but each chromosome
and its copy(sister chromosome) change to sister
chromatids at end of this phase
•
Nucleus
CELL
MEMBRANE
Cytoplasm
Animal Cell
Plant Cell
Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
•
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Mitosis begins (cell begins to divide)
Centrioles (or poles) appear and begin to
move to opposite end of the cell.
Spindle fibers form between the poles.
Centrioles
Sister chromatids
Spindle fibers
Animal Cell
Plant Cell
Spindle fibers
Centrioles
Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
•
Chromatids (or pairs of chromosomes) attach
to the spindle fibers.
Centrioles
Spindle fibers
Animal Cell
Plant Cell
Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
•
Chromatids (or pairs of chromosomes)
separate and begin to move to opposite
ends of the cell.
Centrioles
Spindle fibers
Animal Cell
Plant Cell
Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
•
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Two new nuclei form.
Chromosomes appear as chromatin (threads
rather than rods).
Mitosis ends.
Nuclei
Chromatin
Nuclei
Animal Cell
Plant Cell
Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
•
Cell membrane moves inward to create two
daughter cells – each with its own nucleus
with identical chromosomes.
Animal Mitosis -- Review
Interphase
Prophase
Metaphase
Anaphase
Telophase
Interphase
Plant Mitosis -- Review
Interphase
Prophase
Metaphase
Anaphase
Telophase
Interphase
Interphase
Prophase
Metaphase
Anaphase
Telophase
Cytokinesis
IPMATC
I Prefer Meatloaf At Tennis Camp
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- Cell Division
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http://www.cellsalive.com/mitosis.htm