Which of the following is true about motion of membrane lipids? A. They can move most rapidly when in the gel phase. B. Lateral diffusion is catalyzed by flippase proteins. C. To increase the fluidity of membranes at low temperatures, cells synthesize more saturated fatty acids and fewer unsaturated fatty acids. D. Transbilayer diffusion involves the transfer of lipids from one face of the bilayer to another.

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Chapter1: Biochemistry: An Evolving Science
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Which of the following is true about motion of membrane lipids?

A. They can move most rapidly when in the gel phase.
B. Lateral diffusion is catalyzed by flippase proteins.
C. To increase the fluidity of membranes at low temperatures, cells synthesize more saturated fatty acids and fewer unsaturated fatty acids.
D. Transbilayer diffusion involves the transfer of lipids from one face of the bilayer to another.
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