A phospholipid molecule consists of a glycerol backbone, two fatty acid tails, and a phosphate group. The glycerol is attached to the two fatty acids, which are hydrophobic, while the phosphate group is hydrophilic. This unique structure allows phospholipids to form bilayers in cell membranes, creating a barrier that separates the interior of the cell from the external environment. Note that the other components mentioned (adenosine, ribose, nitrogen base) are part of nucleotides, not phospholipids.
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