Membrane lipids in tissue samples obtained from different parts of the leg of an arctic reindeer have different fatty acid compositions. Logically, what difference would you predict?

Question

Quizplus · Accepted Answer

Membrane lipids in colder parts of the body, such as near the hooves of an arctic reindeer, would likely contain a greater proportion of unsaturated fatty acids. Unsaturated fats have kinks in their tails due to double bonds, which prevent them from packing closely together, thus maintaining membrane fluidity at lower temperatures. This adaptation is crucial for organisms living in cold environments to ensure proper cellular function.

Membrane Lipids in Tissue Samples Obtained from Different Parts of the Leg