An ordered set of events, culminating in cell growth and division into two daughter cells. 1
What are cells made of? What are the functions of cell division? What happens during the cell cycle? 2
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Cell division allows organisms to Grow Repair reproduce 4
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The formation of cells takes energy! The time needed by the new cells to replenish their energy causes a "gap". After cell energy reserves are restored, the cells begin to grow. This is the longest phase of the cell cycle. 6
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Synthesis means to make. After a period of growth, each cell's original DNA is duplicated in the process of replication. 9
The replication of DNA also takes a lot of energy! The time taken by a cell to build up its energy reserves produces a second "gap". 10
The process by which the DNA is divided into two identical sets before the cell divides. Prophase Metaphase Anaphase Telophase Cytokinesis 11
PMAT ProphaseMetaphaseAnaphaseTelophase 12
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Chromatin coils to form chromosomes, nuclear membrane disappears, and centrioles prepare to move to opposite sides of the cell. 14
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Fibers move the chromosomes to the equator (middle) of the cell. 17
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The centromere of each pair of chromatids divides, separate and are pushed to opposite poles (apart) of the cell by the spindle fibers. 19
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All spindle fibers disappear, chromatids unwind and stretch as a nuclear membrane forms around each mass of chromatin. 21
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Cytokinesis is the division of the cytoplasm of a parent cell. The cell pinches together roughly in the center. 23
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Cancer is a disease of the cell cycle. Some of the body’s cells divide uncontrollably and tumors form. 30
(Target cells animation: click on go sign) 31
(Normal contact inhibition animation: click on petri dish) 32
Treating Cancers Cancer treatments include drugs that can stop cancer cells from dividing. 33
1?2?3?4? 5?New cells 34
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“Cell” Phone- 4/4 Vocabulary Cards-4/5 Vocabulary Quiz -4/5 Cell Coloring Study Guide- 4/5