The fluidity of membranes in a plant in cold | vedclass

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(A) Membrane fluidity refers to the ability of lipids and proteins to move laterally within the bilayer. In cold weather,phospholipids tend to pack mo

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increasing the number of phospholipids with unsaturated hydrocarbon tails.

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(A) Membrane fluidity refers to the ability of lipids and proteins to move laterally within the bilayer. In cold weather,phospholipids tend to pack more tightly,which decreases fluidity. Plants adapt to cold temperatures by increasing the proportion of unsaturated fatty acids in their membrane phospholipids. The 'kinks' in the unsaturated hydrocarbon tails prevent the phospholipids from packing too tightly,thereby maintaining membrane fluidity. Cholesterol,which acts as a temperature buffer,is primarily found in animal cell membranes,not plant cell membranes.

The fluidity of membranes in a plant in cold weather may be maintained by

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