Wednesday, October 6, 2010

Demos and Notes

Egg Osmosis Demo Day 2
Egg soaked in vinegar:
Hard shell gradually broken down by vinegar
- surrounded by bubbles (slowly eat away shell)
- soft, gooey feeling

Normal and Plasmolyzed Cells Demo

Purpose: To see the differerence(s) between a normal and plasmolyzed cell

Hypotonic: normal elodea leaf cell (good)
- tap water added
- cell membrane doesn't change

Hypertonic: plasmolyzed elodea leaf cell (bad)
- salt water added
- vacuole shrunk
- empty space between membrane and cell wall

  • Exocytosis
  • Endocytosis: 3 types
  • Finish Lab
  • Read Chapter 8 p.121-129 (Mitosis and Cancer)
Next Scribe: Justin

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