Mitosis & Cell Cycle

• Mitosis


  The process by which a cell divides into two or more cells
• Cell


  • Contains a nucleus
  • Contains chromosomes made of DNA
• Body cells contain 23 pairs of chromosomes
• Chromosome


  Carries a large number of genes that determine many features
• Cell cycle including mitosis

  1. DNA replication

  2. Mitosis

  3. Cell division
• Mitosis


  • One set of chromosomes is pulled to each end of the cell
  • The nucleus also divides
  • The cytoplasm and cell membrane divide to form two identical cells
• Functions of mitosis


  • Growth and development of multicellular organisms
  • Repair of organisms
  • Asexual reproduction
• Multicellular organisms have cells that work together in body tissues, organs, and organ systems
• Cells are specialized to perform different functions
• Cell cycle


  The cycle of growth and division that cells go through
• Mitosis


  The process of cell division to create new cells
• Uncontrolled cell division can lead to cancer
• Cancer cells


  • Divide too frequently
  • May not communicate with healthy cells
  • May not perform normal cell functions
  • May not anchor themselves properly, making them more likely to spread
  • Can secrete their own growth hormones to divert nutrients