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The image shows a lipid bilayer, with the polar heads represented by circles and the hydrophobic tails represented by lines. Arrange the fatty acids in the lipid bilayer to indicate a structure that, when incorporated into a phospholipid, would result in a more fluid membrane with a lower melting point. Be sure to insert the fatty acids into the bilayer in the correct orientation. Not all the fatty acids will be used. Answer Bank

The image shows a lipid bilayer, with the polar heads represented by circles and the hydrophobic tails represented by lines. Arrange the fatty acids in the lipid bilayer to indicate a structure that, when incorporated into a phospholipid, would result in a more fluid membrane with a lower melting point. Be sure to insert the fatty acids into the bilayer in the correct orientation. Not all the fatty acids will be used. Answer Bank

Biochemistry
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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The image illustrates a lipid bilayer, characterized by polar heads depicted as circles and hydrophobic tails shown as lines. The task is to arrange the fatty acids in the lipid bilayer to create a structure that, when incorporated into a phospholipid, results in a more fluid membrane with a lower melting point. It's important to insert the fatty acids in the correct orientation, and not all fatty acids from the answer bank will be used. **Diagram Explanation:** - **Lipid Bilayer Structure:** - The bilayer consists of two rows of polar heads (blue circles) facing outward, with hydrophobic tails (wavy lines) extending inward. - There are gaps within the bilayer meant for inserting specific fatty acids. - **Answer Bank:** - Contains four different fatty acid structures: - Top left: A saturated fatty acid with straight chains. - Top right: An unsaturated fatty acid with a kink (indicating a double bond). - Bottom left: A shorter saturated fatty acid. - Bottom right: Another unsaturated fatty acid with a double bond kink. For a more fluid membrane with a lower melting point, incorporate unsaturated fatty acids (with kinks) from the answer bank into the bilayer. These create more space and prevent tight packing, enhancing fluidity.
Transcribed Image Text:The image illustrates a lipid bilayer, characterized by polar heads depicted as circles and hydrophobic tails shown as lines. The task is to arrange the fatty acids in the lipid bilayer to create a structure that, when incorporated into a phospholipid, results in a more fluid membrane with a lower melting point. It's important to insert the fatty acids in the correct orientation, and not all fatty acids from the answer bank will be used. **Diagram Explanation:** - **Lipid Bilayer Structure:** - The bilayer consists of two rows of polar heads (blue circles) facing outward, with hydrophobic tails (wavy lines) extending inward. - There are gaps within the bilayer meant for inserting specific fatty acids. - **Answer Bank:** - Contains four different fatty acid structures: - Top left: A saturated fatty acid with straight chains. - Top right: An unsaturated fatty acid with a kink (indicating a double bond). - Bottom left: A shorter saturated fatty acid. - Bottom right: Another unsaturated fatty acid with a double bond kink. For a more fluid membrane with a lower melting point, incorporate unsaturated fatty acids (with kinks) from the answer bank into the bilayer. These create more space and prevent tight packing, enhancing fluidity.
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