Membrane Structure and Function
Cholesterol is essential for normal membrane functions because it

keeps membranes fluid.
cannot be made by higher organisms
plugs up the cardiac arteries of older men
spans the thickness of the bilayer

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Membrane Structure and Function
In Fluid mosaic model, the biological membrane can be viewed as

two dimensional solutions of oriented lipids and globular proteins
three dimensional solutions of oriented lipids and carbohydrate
three dimensional solutions of oriented lipids and globular proteins
two dimensional solutions of oriented lipids and carbohydrate

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Membrane Structure and Function
Cholesterol is somewhat amphipathic due to

the long branched hydrocarbon along with the four hydrocarbon rings
the five-methyl groups along with the hydrocarbon chain
the three six-membered rings along with the single five-membered ring
the single hydroxyl along with the hydrocarbon nature of the remainder of the molecule

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