“Humility is not thinking less of yourself, it’s thinking of yourself less.” ~ C.S. Lewis Thursday, October 16, 2013 S.C. Standards for Today: B-2: The student will demonstrate an understanding of the structure and function of cells and their organelles. Today’s Objectives: Finish Cell Project Presentations Cell Differentiation and Activity Reminder: Content Recovery must be completed by 10/18/13. Midterm 10/27/13. Warm Up: Name 6 greenhouse gasses? What are sources of carbon?

Cell Differentiation  The process by which unspecialized cells develop into their mature forms and functions  Embryonic Stem Cells  Undifferentiated (unspecialized)  Totipotent – can develop into ANY type tissue  Adult Stem Cells  Pluripotent or multipotent – can develop into certain types of tissues.

Cell Differentiation  As division proceeds, cells increase in number, more specialized in structure and function  Nearly all cells have the same DNA, only specific parts are activated  All cells initially have the potential to become any cell

Cell Differentiation- Activity  When you are given a card, hold it in the air  Your colored card will be swapped for a different color card.  Put down your original card and hold up your new card.

Day One Day Two Day Three Day Four Morula Day Five Blastula Day Six Implantation Days Seven-Ten Ectoderm Skin, Nervous System Endoderm Lining of Gut and Internal Organs Muscles, Bones, Heart Mesoderm