試題詳解

3. Which of the following statements best describes how unsaturated fatty acids increase membrane fluidity at lower temperatures?
(A) The double bonds form kinks in the fatty acid tails, preventing adjacent lipids from packing tightly.
(B) Unsaturated fatty acids have a higher cholesterol content, which prevents adjacent lipids from packing tightly.
(C) Unsaturated fatty acids are more nonpolar than saturated fatty acids.
(D) The double bonds block interaction among the hydrophilic head groups of the lipids.