Why do animals live in cold climates generally have more polyunsaturated fatty acid residues in their fats than do animals live in warm climates?

Answer 1

Cholesterol in a cell membrane provides flexibility to the wall. The cell is thus less rigid in the cold. An animal will have more cholesterol, on average, in their cell walls in a cold environment vs. a warm environment.

Answer 2

This is to help with membrane fluidity within the organisms cells.

This is why these organisms have a large amount of cholesterol, as this molecule plays an important role in helping membrane's not to solidify in cold climates.

Hope I helped! :)

Answer 3

wateber i dont have idea on that ..datz why i surf internet .. to know not to answer the question

Answer 4

the transition state (solid to liquid) is lower for polyunsaturated fatty acids thus keeping the fat reserves as a solid at lower temperatures.