bio question

[BoneMental]

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I guess I've never really bothered to figure this out before, but I've always been told that nonpolar molecules will have an easier time getting through the cell membrane (phospholipid) because they are nonpolar and the membrane's core is hydrophobic.

That makes sense, but how do these nonpolar molecules get past the polar heads of the membrane?

Or are we assuming transport proteins of somesort are used?

 

[TieuBachHo]

Do non-polar molecules interact with polar heads? No, right? So, they just slip right through.