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3 answers

The have both polar and nonpolar sections to the molecule to help control what may pass.

2006-10-15 04:27:49 · answer #1 · answered by physandchemteach 7 · 1 0

Phospholipids consist of a polar and nonpolar known as "heads" and "tails". They are located inside the cell membrane to help w/ selective permeability. Also the polar "head" absorbs water and the nonpolar "tail" doesn't.

2006-10-15 06:19:51 · answer #2 · answered by jjefferson210 2 · 0 0

Do your own homework.

2006-10-15 04:30:31 · answer #3 · answered by J~Me 5 · 0 0

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