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== == As you increase the temperature I predict that, due to the molecules vibrating with more kinetic energy, and at higher frequencies and amplitudes, the Van der Waals forces will be overcome between molecules. This could cause the phospholipid bilayer to move apart, and for the cholesterol molecules to bind weaker with the fatty acid chains of the phospholipids. Also, the increased kinetic energy of the protein molecules will cause the hydrogen bonds to break, causing a change in the shape of the 3D tertiary structure of the proteins. This could cause holes in the membrane to appear. In addition to this, the higher temperatures will cause the phospholipid bilayers to become more fluid, and therefore become more permeable.

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17y ago

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