Presentation on theme: "Wake-up 1.Examine the gel to the right. What do the bands represent? 2.Which fragment is the longest, A or B? Explain. 3.Which fragment is the shortest,"— Presentation transcript:
Wake-up 1.Examine the gel to the right. What do the bands represent? 2.Which fragment is the longest, A or B? Explain. 3.Which fragment is the shortest, A or B? Explain. 4.Who is guilty of the crime? A B
Specialized Cells Have been differentiated: Each cell has a different function
How are Stem Cells different? Unspecialized cells that can constantly renew themselves through cell division
How are Stem Cells Different? Can be induced to become specialized cells with specific functions
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.
Two types: Embryonic Stem Cells Undifferentiated cells found in embryos that developed from eggs that have been fertilized artificially in a lab Donated for research.
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. Watch Video
Embryonic Stem Line (Watch Video)Embryonic Stem Line A group of constantly dividing stem cells; product of just one cell