(a) Membrane polar lipids (phospholipids, glycolipids) are comprised of saturate

Question

(a) Membrane polar lipids (phospholipids, glycolipids) are comprised of saturated and unsaturated (one or two degrees) long chain fatty acids. Unsaturated fatty acids (USFAs) are more costly for the cell to make than are the corresponding saturated fatty acids (hence, USFAs must be needed!). Illustrate and explain why the membrane lipid pool must include polar lipids having one or more unsaturated "fatty acid tails (fluidity with vs without the unsaturation; permeability with vs. without the unsaturation)

Explanation / Answer

Unsaturated fatty acids possess kinks/ bends which increases the mobility and fluidity of membrane. So it is important. Unsaturated fatty acids lead to more membrane permeability

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