Biology (11th Edition)

Published by McGraw-Hill Education
ISBN 10: 1-25918-813-2
ISBN 13: 978-1-25918-813-8

Chapter 3 - The Chemical Building Blocks of Life - Review Questions - Apply: 7

Answer

D.

Work Step by Step

In a lipid bilayer, it is energetically spontaneous for the fatty acid tails to face inward to one another and the polar head groups to face out and interact with water. This makes both A. and C. correct, so D. is the best choice, while B. is the opposite of what is true: fatty acids cannot interact with water, making B. incorrect.
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