After a Membrane Freezes and Then Thaws, It Often Becomes

question 15

Multiple Choice

After a membrane freezes and then thaws, it often becomes leaky to solutes. The most reasonable explanation for this is that

• A)transport proteins become nonfunctional during freezing.
• B)the lipid bilayer loses its fluidity when it freezes.
• C)aquaporins can no longer function after freezing.
• D)the integrity of the lipid bilayer is broken when the membrane freezes.
• E)the solubility of most solutes in the cytoplasm decreases on freezing.

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Definitions:

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