Cell Membrane Bubble Lab

By Jeremy Conn | 20,891 views

A pictorial describing the method for setting up the apparatus necessary for performing the cell membrane bubble lab. }

Presentation Outline

  1. 1. CELL MEMBRANE

    SOAP BUBBLE LAB

    What is this slide deck all about?

    The purpose of this slide deck is to guide students in the process of constructing the proper apparatus necessary for performing a cell membrane simulation using soap bubbles. I am a high school biology teacher and this was a lab we did in class. My students loved it!

  2. 2. MATERIALS

    AND PROCEDURES

  3. 3. YOU'LL NEED THESE

    TO MAKE THE BUBBLES

    Supplies

    900ml of water 100ml of dish soap 25ml of corn syrup four straws shallow tray roll of thread ball of string or twine

  4. 4. GRAB FOUR BENDABLE STRAWS

    COLLECT THEM ALL

  5. 5. BEND THE STRAWS AND CRIMP THE SHORT ENDS

  6. 6. ARRANGE THE STRAWS LIKE THIS

  7. 7. SLIDE THE SHORT ENDS INTO THE LONG ENDS

  8. 8. BUBBLE FRAME IS COMPLETE

  9. 9. BUBBLE FRAME

    ALTERNATE METHOD

  10. 10. CUT STRAWS BELOW ELBOWS

  11. 11. STRAWS SHOULD BE ABOUT 5 1/2"

  12. 12. RUN A 30" STRING THROUGH STRAWS

  13. 13. TIE A KNOT HERE

  14. 14. MAKE THE KNOT TIGHT

  15. 15. CUT THE LOOSE ENDS

  16. 16. CUT THE LOOSE ENDS

    ALTERNATE VIEW

  17. 17. CHOOSE YOUR FRAME

  18. 18. GRAB SOME THREAD

  19. 19. TIE LOOP TWO FINGERS WIDE

  20. 20. THE RING IS READY

    What is the purpose of the ring?

    The ring of thread is used to create a channel through the bubble film. The frame is lifted from the tray of bubble solution so that a thin film spans across the frame. Students gently lay the ring of thread onto the bubble film. The students then take something dry, like the tip of a pencil, and pop the film inside the ring. To their amazement, the string pops into a perfect circle that floats across the film within the frame. This is used to illustrate channel proteins that create passageways across cellular membranes.

  21. 21. BUBBLE RECIPE

  22. 22. 900ML WATER

  23. 23. 100ML DISH SOAP

  24. 24. 25ML CORN SYRUP

  25. 25. MIX SOLUTION

    POUR IN SHALLOW PAN SUCH AS A CAFETERIA TRAY

  26. 26. MAKE BUBBLES

    Further Information

    A more detailed explanation of this lab can be found here. http://www.clearbiology.com/cell-membrane-bubble-lab/