Which of these best describes the structure of phospholipids?
Phospholipids are chains or rings of carbon atoms bonded to oxygen or hydrogen.
Phospholipids are built from building blocks called amino acids.
Phospholipids have a portion of the molecule that is water-soluble and a portion that is water-insoluble.
Phospholipids are composed of units containing a sugar molecule, a nitrogen-containing base, and a phosphate group.
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