Lipids and Biomembranes

ID #1072

What does a planar bilayer do for a cell? Are they just steps in the formation of a liposome (sort of like the primary and secondary structures for proteins)?

Sure, that's a reasonable analogy to draw. We were simply describing what happens to lipids when they are exposed to water, in order to illustrate how (and why) cells and organelles are separated by lipid bilayers. You're right, these are steps along the pathway -- you're not likely to encounter a planar bilayer structure anywhere in a cell, because it is energetically unfavorable.

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