In an aqueous environment, the phospholipids of a membrane ____.

a. are arranged in a single layer
b. are arranged in a bilayer with the polar heads of each layer located at the surface
c. are arranged in a bilayer with the fatty acid tails located at the surface
d. are arranged in a bilayer but the phospholipids have no specific orientation
e. dissolve



Answer :

A bilayer of self-arranging , tail-to-tail phospholipid molecules makes up the cell membrane (Option c).

The phospholipids make up the majority of the lipid bilayer.

Polar phosphate heads and hydrophobic non-polar fatty acid tails make up these phospholipids.

The arrangement of phospholipids in water is that their hydrophilic phosphate heads face the outward aqueous side and their hydrophobic fatty acid tails face each other inside the lipid bilayer.

In summary, phospholipid molecules that self-arrange tail-to-tail form a bilayer that makes up the cell membrane (Option c).

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