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DO NOW. Turn in: Genetic Engineering Simulation, Get out Genetic Ethics HW. What are some different types of cells within our body?? Think on this one. What do you know about stem cells?. Stem Cells. What are stem cells?.

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DO NOW

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  1. DO NOW • Turn in: Genetic Engineering Simulation, Get out Genetic Ethics HW. • What are some different types of cells within our body?? Think on this one. • What do you know about stem cells?

  2. Stem Cells

  3. What are stem cells? Cells from which all other cells with specialized functions are generated

  4. Review Cells: Eukaryotic Plant Cell Animal Cell

  5. Red Blood Cells: Describe their shape

  6. RBC Function Transports oxygen throughout organisms. Shape allows for more surface area for oxygen attachment.

  7. Common Object Most Similar To.. Oxygen Tank

  8. Muscle Cells: Describe their shape

  9. Muscle Cell Function Stretches and contracts like a rubber band; allows muscles to contract and retract

  10. Common Object Most Similar To.. Rubber Band

  11. Nerve Cells: Describe their shape

  12. Nerve Cell Function Conducts messages throughout organisms

  13. Common Object Most Similar To.. Telephone line

  14. Sperm Cells: Describe their shape

  15. Sperm Cell Function Possesses a tail; allows for movement to the egg

  16. Common Object Most Similar To.. Motor boat

  17. Specialized Cells Differentiation: Stem cells develop into a specific type of cell in response to triggers (chemicals) from the body or the cell itself.

  18. How are Stem Cells different? Unspecialized cells that can constantly renew themselves through cell division

  19. How are Stem Cells Different? Can be induced (chemical signals) to become specialized cells with specific functions

  20. Two types: Adult Stem Cells Undifferentiated cell found in certain tissues and organs; function is to maintain and repair the tissue where they are found.

  21. Adult Stem Cells

  22. Two types: Embryonic Stem Cells Undifferentiated cells found in embryos that developed from eggs that have been fertilized artificially in a lab and then donated for research.

  23. Embryonic Stem Cells

  24. Adult Stem Cells vs. Embryonic Stem Cells Embryonic stem cells have the ability to develop into almost every type of cell in the human body Adult stem cells may only develop into a limited number of cell types.

  25. Embryonic Stem Line A group of constantly dividing stem cells; product of just one cell

  26. Why do we care about Stem Cells?

  27. Why do we care about stem cells? Increase an understanding of how diseases occur if have “sick” cells, can watch them mature to see what occurs.

  28. Why do we care about stem cells? Generate healthy cells to replace diseased cells

  29. Why do we care about stem cells? Test new drugs Instead of testing on living organisms, tests can be performed on specific cells generated by stem cells

  30. Stem Cell Controversy

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