The Nature of Stem Cells

1. What does it mean when a cell is differentiated? How does this compare to a stem cell?

2. After fertilization, cells in the developing organism are  (differentiated/ undifferentiated). As development continues, signals gradually  limit the cell’s potential.

3. Explain the process that occurs as the development happens. When/how do cells begin to limit their potential?

4. What are somatic stem cells? What are their roles? How do they differ from embryonic stem cells?

5. Give an example of a somatic stem cell and what it can produce.

Pick any Niche Cell. Play the game!

1. What Stem Cell Niche did you pick?

2. Explain the process to create new cells from a stem cell niche.

3. What kinds of new cells did your stem cell create?

Stem Cell Quick Reference

Complete the table below.

 The Stem Cell Debate: Is it over?

This area focuses on US laws; different countries have different laws regarding stem cell use and research

1. With the discovery of how to remove stem cells from human embryos in 1998, a mix of controversy and excitement occurred.
2. Why were scientists excited?
3. Why was the discovery considered controversial?

2. Consider the questions raised under “The Ethical Questions” section. Record your answers to these questions below.

3. What are iPS cells? What are hES cells? Hint: you should have these answers from the section above.

4. What are some advantages of using iPS cells over hES cells? What are some disadvantages?

5. Consider the last questions on the page: “Should the laws that govern iPS cells differ from those for hES cells?” Explain your answer to this question.

7. Lastly, summarize yourthoughts on the use of stem cells. If you were King or Queen of the World with the power to create any legislation, what would be your rule? Why?
8. What are the UAE laws regarding stem cell use and research?