Saturated fats have long straight tails of fatty acids,while unsaturated fats have kinks in their tails due to double bonds.These kinks prevent the fats from packing together as tightly.Animals that are ectothermic (cold blooded)need to keep their membranes fluid at cooler temperature and thus use ______ in their membranes.

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The kinks in the tails of unsaturated fats prevent them from packing together tightly, which keeps the cell membrane fluid at cooler temperatures. Ectothermic animals require fluid cell membranes at cooler temperatures to function properly, so they mostly use unsaturated fats in their cell membranes.

Saturated Fats Have Long Straight Tails of Fatty Acids,while Unsaturated