Question

Explain why the intracellular and extracellular surfaces of the phospholipid bilayer are polar.

Answer 1

Answer:

A single phospholipid molecule has a phosphate group on one end, called the “head,” and two side-by-side chains of fatty acids that make up the lipid “tails. ” The phosphate group is negatively charged, making the head polar and hydrophilic, or “water loving.” The phosphate heads are thus attracted to the water.

Explanation:

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