Chp' 5 Cell Division and Specialization

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Chp. 5 Cell Division and Specialization

• Cell cycle beginning of 1 cell division to
  beginning of next
• Average length in adult human is 20 hours
• Cell division cell divides into 2 daughter cells

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Mitosis

• Eukaryotic cells
• M phase
• Interphase occurs between cell divisions
• G1 cells growth and activity
• S copying of chromosomes
• G2 makes final preparations

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Cells

• Brain and Heart rarely divide

4
Cells

• Skin and digestive tract divide throughout life

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Definitions

• Cancer cells grow uncontrollably
• Lost ability to regulate cell cycle

• Cyclins regulate timing of the cell

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Mitosis

• 1. Prophase
• 2. Metaphase
• 3. Anaphase
• 4. Telophase
• Cytokinesis - cytoplasm divides
• During anaphase and telophase