Biology 2010 Student Edition

Published by Prentice Hall
ISBN 10: 9780133669510
ISBN 13: 978-0-13366-951-0

Chapter 7, Cell Structure and Function - 7.2 - Cell Structure - 7.2 Assessment - Page 205: 5b


A lipid is amphipathic, and thus it will automatically form a membrane when in water.

Work Step by Step

Lipids are amphipathic with a hydrophilic phosphate head and two hydrophobic fatty acid tails. Thus, when placed in water, a bilayer will form because the hydrophilic heads will stick out since it is attracted to water, and the hydrophobic tails will stick in because it is nonpolar.
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