( ( ( ( The outer ) and ) ( inner ( cell membranes ) ) ) ( ( are ( composed ( of ( a ( phospholipid bilayer ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (JJ outer)) (CC and) (NP (JJ inner) (NN cell) (NNS membranes))) (VP (VBP are) (VP (VBN composed) (PP (IN of) (NP (DT a) (JJ phospholipid) (NN bilayer))))) (. .)))
The outer and inner cell membranes are composed of a phospholipid bilayer.
(ROOT (S (NP (DT The) (NN cell) (NN membrane)) (VP (VBZ consists) (PP (IN of) (NP (NP (CD two) (JJ adjacent) (NNS layers)) (PP (IN of) (NP (NNS phospholipids)))))) (. .)))