2.1.9

Stem Cells

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Stem Cells

Stem cells are undifferentiated cells that have not yet specialised to perform a specific function. They can create more stem cells or differentiate (become a different type of body cell) to perform another function. Stem cells are found in:

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Embryos

  • The stem cells in embryos can differentiate into most cell types, to produce all of the cell types that will make up the organism.
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Bone marrow

  • In human adults, stem cells can be found in bone marrow (as well as other tissues and organs).
  • Adult stem cells differentiate into fewer cell types than stem cells in embryos. They are used to replace dying cells and damaged tissues.
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Plant meristems

  • Plant stem cells are found in the meristem tissue.
  • Plant stem cells can differentiate into all types of plant cell throughout the life of the plant. This allows plants to grow for their whole lives.

Jump to other topics

1The Nature & Variety of Living Organisms

2Structure & Functions in Living Organisms

3Organism Functions

3.1Respiration

3.2Gas Exchange

3.3Transport

3.4Excretion

3.5Coordination & Response

4Reproduction & Inheritance

5Ecology

6Biological Resources

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