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Unsaturation, Kinks, and Physical State
Grade Level
AP Biology
APB.090 Unsaturation, Kinks, and Physical State
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A drug inhibits a desaturase enzyme, and stored lipids gradually become firmer at room temperature. Which mechanism best explains the change?
A
More cis double bonds are formed, so fatty acid tails have more kinks and pack more tightly.
B
Fewer cis double bonds are formed, so fatty acid tails have fewer kinks and pack more tightly.
C
Fewer tails are hydrophobic, so the lipids become protein crystals.
D
More double bonds are removed from head groups, making the tails dissolve.
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