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 and other tissues
• 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 in the body
• Where are plant stem cells found?

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

  All cells and tissues needed by the plant
• What are some examples of specialized cells formed from plant stem cells?

  Palisade cells, phloem, and xylem cells
• What is the main difference between embryonic and adult stem cells?

  Embryonic stem cells can differentiate into any cell
• What are the key differences between stem cells in animals and plants?

  • Animal stem cells:
  • Embryonic stem cells can differentiate into any cell type.
  • Adult stem cells can only differentiate into a limited range of cells.
  • Plant stem cells:
  • Found in meristem tissue.
  • Can differentiate into all necessary plant cells throughout the plant's life.
• What is the significance of stem cells in medical research?

  • Potential for regenerative medicine
  • Ability to replace damaged tissues
  • Understanding developmental processes
  • Research into genetic diseases