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AP Biology
Unit 1 – Chemistry of Life
Topic 1.3
The structure of biological molecules determines how they behave. In a cell's plasma membrane the saturation of carbon found in the fatty acid tails can change membrane flexibility. Which statement best explains this?
The presence of cholesterol increases the space between phospholipids, creating a more flexible membrane.
Saturated fatty acids have C-C double bonds creating bends in the fatty acid tails.
Unsaturated fatty acids have C-C double bonds creating bends in the fatty acid tails.
When carbon's a fully saturated the carbon chain does not have double bonds, creating a more flexible membrane.
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AP Biology - 1.3 Introduction to Biological Macromolecules
Key terms
Fatty Acid Tails
Plasma Membrane
Membrane Flexibility
Saturation
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AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.
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