Stem cells

• What are stem cells?

  Cells that can divide and differentiate
• What are the two key features of stem cells?

  They divide by mitosis and differentiate
• How do stem cells divide?

  By mitosis to form more cells
• What can stem cells differentiate into?

  Specialized cells like nerve or skin cells
• What is a zygote?

  A fertilized egg cell
• What are embryonic stem cells?

  Cells that can differentiate into any type
• How long does it take for a zygote to develop into a baby?

  About nine months
• What happens to stem cells as an organism matures?

  They become specialized and less versatile
• Where are adult stem cells found?

  In bone marrow
• What types of cells can adult stem cells differentiate into?

  Different types of blood cells
• What is the role of adult stem cells?

  To replace damaged cells
• Where are plant stem cells located?

  In meristem tissue
• What do plant stem cells differentiate into?

  All cells and tissues the plant needs
• What are some examples of cells that plant stem cells can form?

  Palisade, phloem, and xylem cells
• How long do plant stem cells persist?

  For the plant's entire life
• What happens to embryonic stem cells as development progresses?

  They disappear by full development
• What are the differences between embryonic and adult stem cells?

  • Embryonic stem cells can differentiate into any cell type.
  • Adult stem cells can only differentiate into a limited range of cells.
  • Embryonic stem cells are present in early development.
  • Adult stem cells are found in specific tissues like bone marrow.
• What is the significance of stem cells in human development?

  • They allow for growth and development.
  • They replace damaged cells throughout life.
  • They contribute to the formation of all body tissues.
• What is the role of plant stem cells in growth?

  • They enable continuous growth in plants.
  • They differentiate into various necessary plant tissues.
  • They persist throughout the plant's life cycle.