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T2-Cell Systems L4

T2-Lesson 4 Cell Division

QuestionAnswer
The Function of Cell Division A. Make new "daughter cells" 1. Repair damage 2. Replace old/dead cells
The Function of Cell Division B. Allows Organisms to grow larger 1. Unicellular organisms make new organisms through cell division. 2. Multicellular organisms grow larger and develop new structures as cells reproduce.
The Cell Cycle Interphase Mitosis- Prophase, Metaphase, Anaphase, Telophase Cytokinesis
A.INTERPHASE 1. Cells grows 2. Copies DNA 3. Prepares to divide.
1. .Interphase- CELL GROWS Growing- Cell gets bigger; makes more organelles.
2. Interphase- REPLICATION Cells makes a copy of the DNA in the nucleus; each new cell will have a complete set of chromosomes.
3. Interphase- PREPARING FOR CELL DIVISION Animal cell produces structures called centrioles, which help divide the DNA.
B. MITOSIS Second stage of the cell cycle; nucleus divides into 2 nuclei. 1. Prophase 2. Metaphase 3. Anaphase 4. Telophase
1. Mitosis- PROPHASE DNA condenses into separate chromosomes- each with a pair of identical chromatids; nuclear membrane begins to break down.
2. Mitosis- METAPHASE Chromosomes line up along the middle of the cell; each chromatid will go to the new daughter cell.
3. Mitosis- ANAPHASE Fibers from centrioles will pull chromatids apart.
4. Mitosis- TELEPHASE Chromatids are on each side of the cell; nuclear membrane begins to reforms around DNA.
C. CYTOKINESIS Final Stage; cytoplasm and organelles divide equals and the cell splits into 2 daughter cells. 1. Animal Cells 2. Plant Cells
1. Cytokinesis- ANIMAL CELL Cell membrane squeezes and pinches off.
2. Cytokinesis- PLANT CELLS Cell plate forms along the center cresting new cell membrane and cell wall for each new cell
Created by: pinedaK
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