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Friday, November 3

Friday, November 3. Cellular Biology - HS- LS1-2 Develop and use a model to illustrate  the hierarchical organization of interacting systems that provide specific functions within multicellular organisms. . Today’s agenda : Warm up Sorting activity (cell structure and function)

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Friday, November 3

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  1. Friday, November 3 Cellular Biology - HS-LS1-2 Develop and use a model to illustrate  the hierarchical organization of interacting systems that provide specific functions within multicellular organisms.  • Today’s agenda: • Warm up • Sorting activity (cell structure and function) • Cell differentiation

  2. Warm up! CELL RIDDLES

  3. What questions come to mind as you watch the video clip https://www.youtube.com/watch?v=6ht8cS2bg_Y

  4. Identifying the common components of cells aboveSort out these cells and justify your sorting system Are all cells the same?

  5. Identifying the common components of cells aboveSort out these cells and justify your sorting system

  6. Why are cells of different shapes and sizes found in the human body?

  7. Why are cells of different shapes and sizes found in the human body? • THE SHAPE OF A CELL DEPENDS ON ITS FUNCTION • In a human body, each organ performs a specific function, hence the cells of different organs have different shapes and sizes Can you give examples?

  8. Sperm(from dad) Egg (from mom) zygote Fertilization • The fusion of spermand egg to form a zygote. • A zygote is a fertilized egg

  9. From the zygote to the blastocyst

  10. From the embryo to the fetus

  11. What is cell differentiation? Cellular differentiation or specialization is the process by which a cell changes from one cell type to another.

  12. What is cell differentiation? During human development, a single cell (a fertilized egg) differentiates into every different kind of specialized cell type found in the body, including blood, muscle, and nerve cells. Cells that are undifferentiated are known as stem cells. Stem cells are found in embryos (embryonic stem cells) and in adults (adult stem cells).

  13. Think box Why do cells differentiate?

  14. Think box Why do cells differentiate? Because the various cells of each plant and animals need to perform different functions. Differentiation dramatically changes a cell's size, shape, membrane potential, metabolic activity, and responsiveness to signals.

  15. Cell differentiation https://www.youtube.com/watch?v=KNkQtc7TM6M https://www.youtube.com/watch?v=6ht8cS2bg_Y

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