Stem cells

• What are stem cells?

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

  They can 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
• Why are embryonic stem cells significant?

  They can differentiate into any cell type
• What is formed when a sperm cell fertilizes an egg cell?

  A zygote
• What are embryonic stem cells?

  Cells that can differentiate into any type
• What happens to embryonic stem cells over time?

  They divide and differentiate into various cells
• What type of stem cells are found in adult humans?

  Adult stem cells
• What is the limitation of adult stem cells compared to embryonic stem cells?

  They can only differentiate into a narrow range
• Where are adult stem cells found in the body?

  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 is the function of plant stem cells?

  To differentiate into all necessary plant cells
• What types of cells do plant stem cells differentiate into?

  Palisade, phloem, and xylem cells
• How do plant stem cells differ from embryonic stem cells?

  Plant stem cells persist throughout the plant's life
• What is the main difference between embryonic and adult stem cells?

  Embryonic can differentiate into any cell type
• What is the significance of stem cells in human life?

  They are crucial for growth and repair
• How can stem cells be used in medicine?

  To replace damaged or diseased cells
• What are the types of stem cells discussed in the video?

  • Embryonic stem cells
  • Adult stem cells
  • Plant stem cells
• What are the key 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
  • Embryonic stem cells are present in early development
  • Adult stem cells are found in specific tissues
• What are the functions of plant stem cells?

  • Differentiate into various plant cells
  • Support continuous growth in roots and shoots
  • Form tissues like phloem and xylem
• What is the process of human development from zygote to baby?

  1. Fertilization forms a zygote
  2. Zygote divides by mitosis
  3. Forms an embryo with embryonic stem cells
  4. Cells differentiate into various types
  5. After nine months, a baby is born