If the area of the lipid is 0.5 nm2, how many lipids do you expect to find...
If the area of the lipid is 0.5 nm2, how many lipids do you expect to find in the plasma membrane of E.Coli? Remember the plasma membrane is a bilayer.
Homework Answers
Nlipids = [4 x membrane area] / area per lipid
factor of 4 accounts for the fact that we have two lipid bilayers because of the presence of both an inner and outer membrane.
Note that the area of the bacterial cell membrane is roughly 5 x 106 nm2
So, N = [ 4 x 5 x 106 ] / 0.5 = 4 x 107
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