Download The Cell Cycle

The Cell Cycle
Tennessee State
Standards Addressed
• Grade 7
• GLE 0707.1.4 Illustrate how cell division
occurs in sequential stages to maintain
the chromosome number of a species.
• SPI 0707.1.4 Sequence a series of
diagrams that depict chromosome
movement during plant cell division.
Interphase
Cytokinesis
Mitosis
Click on a green box to learn more Take
about that stage of the cell cycle
Quiz
Interphase
• During Interphase, the
cell’s chromosomes
duplicate.
• This is the phase that
occurs BEFORE mitosis
begins.
• A period of Growth
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Quiz
• Mitosis is the part the
cell cycle in which the
NUCLEUS divides
• There are 4 phases of
Mitosis…
– Prophase
– Metaphase
– Anaphase
– Telophase
– Or…PMAT
Prophase
• Prophase is the FIRST
phase of Mitosis
• The nuclear membrane
has disappeared
• Chromosomes have
condensed and
shortened
• Centrioles move to
opposite ends of the cell
(in Animal cells ONLY)
• Plant cells do NOT have
Centrioles
Metaphase
• Metaphase is the
Second phase of Mitosis
• Chromatids line up in the
MIDDLE of the cell
• Spindle fibers attach to
the Centromeres
Anaphase
• Anaphase is the
THIRD phase of
Mitosis
• Each pair of
chromatids separate,
because the spindle
fibers begin to
shorten
• The separated
chromatids are now
called chromosomes
Telophase
• Telophase is the LAST phase of Mitosis
• TWO NEW NUCLEI form, but the two new cells
are still connected
• Spindle fibers start to disappear
• In plants, a cell plate forms between the two
new cells
Cytokinesis
• Cytokinesis occurs after the last phase of
Mitosis
• The CYTOPLASM separates and two new cells
form
• In plants, new Cell Membranes form from the
Cell Plate
Take
Quiz
Are you ready to TEST your
knowledge of the Cell Cycle?
Hmmmm….
The Cell
Cyle…..
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Quiz!
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need to revisit the material
What is the first phase of
Mitosis?
Interphase
Prophase
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During which stage does
the Cytoplasm divide?
Cytokinesis
Telophase
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Which of the following is a picture
of Anaphase?
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Which structure do Animal
Cells have and Plant Cells
do NOT?
Centrioles
Cell Plate
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Again.
In which stage of Mitosis
do chromatids line up in
the middle of the cell?
Prophase
Metaphase
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Resources
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Resources
• Glencoe Science Tennessee Science Grade 7,
2010 McGraw-Hill
• http://www.sligotoday.ie/details.php?id=14134&
PHPSESSID=1c3cee1d50d35074c69b045b407
7b0fa
• med.mui.ac.ir
• phschool.com
• celldynamics.org