Experimental results from five different studies on cell membranes are given.Which results could be used as evidence to support the claim that temperature affects a membrane's fluidity?
A) Results from freeze-fracture imaging of cell membranes isolated from blood cells of Arctic and desert rabbits
B) A comparison of diffusion rates of different membrane proteins at 37°C in the cell membranes of liver cells from mice
C) A chemical analysis of the saturated and unsaturated fatty acid content in membranes of intestinal cells from a single population of tropical frogs
D) A comparison of lipid compositions of membranes in different cells within the same organism
E) An analysis of the change in fatty acid compositions of liver cell membranes in a fish species before and after they migrate from warm to cold waters

Question

Quizplus · Accepted Answer

The analysis of the change in fatty acid compositions of liver cell membranes in a fish species before and after they migrate from warm to cold waters would be the best evidence to support the claim that temperature affects a membrane's fluidity. This is because temperature affects the fluidity of cell membranes by altering the arrangement and fluidity of the fatty acids within the membrane. The change in fatty acid composition of the liver cell membranes in the fish species before and after migration from warm to cold waters is likely to show a difference in fluidity due to the change in temperature, providing evidence to support the claim. The other choices do not directly measure the effect of temperature on membrane fluidity.

Experimental Results from Five Different Studies on Cell Membranes Are