SOAP BUBBLE LAB
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!
TO MAKE THE BUBBLES
900ml of water 100ml of dish soap 25ml of corn syrup four straws shallow tray roll of thread ball of string or twine
COLLECT THEM ALL
TIE A KNOT HERE
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.
POUR IN SHALLOW PAN SUCH AS A CAFETERIA TRAY
A more detailed explanation of this lab can be found here. http://www.clearbiology.com/cell-membrane-bubble-lab/
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