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The sterol, cholesterol, is a crucial precursor to many hormones and steroids. It also plays a vital role in the cell membrane.

Which of the following statements is NOT correct with respect to cholesterol's interactions within the cell membrane?


By intercalating between the fatty acid chains, cholesterol is used to alter membrane fluidity.


The concentration of cholesterol within the cellular membrane is partially dependant on the environment's temperature.


Cholesterol interacts with the phospholipids where the hydroxyl group is oriented toward the polar phosphate head.


Dietary cholesterol has a direct impact on cell membrane cholesterol.

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