The membranes of winter wheat are able to remain fluid when it is extremely cold by ________.
A) increasing the proportion of unsaturated phospholipids in the membrane
B) decreasing the percentage of cholesterol molecules in the membrane
C) decreasing the number of hydrophobic proteins in the membrane
D) increasing the proportion of glycolipids in the membrane

Question

Quizplus · Accepted Answer

Increasing the proportion of unsaturated phospholipids in the membrane allows the membrane to remain fluid at very cold temperatures. The double bonds in unsaturated fatty acids create kinks in the fatty acid chains, preventing tightly packed crystal structures from forming and maintaining the fluidity of the membrane.

The Membranes of Winter Wheat Are Able to Remain Fluid