The Cell Cycle
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The Cell Cycle The Cell Cycle
description
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. - PowerPoint PPT Presentation
Transcript of The Cell Cycle
The Cell CycleThe 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
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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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• 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
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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?
Cell PlateCentrioles
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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=1c3cee1d50d35074c69b045b4077b0fa
• med.mui.ac.ir
• phschool.com
• celldynamics.org
