Stem cells are undifferentiated cells that can develop into specialized cell types with specific functions. There are several types of stem cells including embryonic stem cells found in embryos and adult stem cells found in tissues. Stem cells have potential to treat diseases because they can turn into other cell types and replace damaged or dead cells. Scientists are also excited that some cell differentiation may be reversible, allowing even more potential applications of stem cells such as growing tissues and organs. However, the use of embryonic stem cells remains controversial due to ethical concerns over embryo destruction.

1. http://learn.genetics.utah.edu/content/stemcells/
1. Explain what stem cells are.
2. What term is given to cells that carry out specific functions?
3. Define:
a. Undifferentiated
b. Specialized
c. Embryo
4. Outline the different types of stem cells.
5. Explain how Scientists are able to gather stem cells
6. Scientists think that stem cells have the potential to treat many diseases in
the future. Explain why stem cells are thought to have this potential.
7. Until recently, cell differentiation was seen as irreversible. Explain why
reversing cell differentiation is so exciting for scientists.
8. Outline what the potential applications are for stem cells.
9. Choose one disease that stem cells might be used to treat and write a
short summary of the disease and application of stem cells.
10.Stem cells are a controversial topic. Outline both sides of the debate.