Bubble Play Use your hands to create a soapy film that you can blow into a bubble Spend 15 minutes playing with bubbles. Try these challenges: Largest bubble Stick your hand into a bubble Create a bubble within a bubble Fuse two bubbles together Break one bubble into two

Bubble Play In your lab book, write a purpose for this activity. Think about: Why did we do this? What can bubbles teach us about the cell membrane?

Bubble Play Analysis: Answer in complete sentences in your lab book Soaps are made of molecules with a single long hydrocarbon tail and a hydrophilic head. How is this similar to a phospholipid? How is this different than a phospholipid? How is the behavior of a bubble similar to the behavior of the cell membrane? List at least three ways. What strategy did you use to get your hand inside a bubble? How is this like the cell membrane and endocytosis (look this up if you don’t know what it is)? Use the word fuse in your answer. What strategy did you use to create a bubble within a bubble? How is the bubble within a bubble structure analogous to a eukaryotic cell? All models have limitations. In what ways (3) are the bubble models NOT representative of the cell membrane?