( ( Cell membranes ) ( ( ( consist mainly ) ( of ( ( phospholipids ( -LRB- ( ( phosphorus-containing fats ) -RRB- ) ) ) ( arranged ( in ( ( a ( sandwich-like ( double layer ) ) ) ( embedded ( with proteins ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Cell) (NNS membranes)) (VP (VBP consist) (ADVP (RB mainly)) (PP (IN of) (NP (NP (NNS phospholipids)) (PRN (-LRB- -LRB-) (NP (JJ phosphorus-containing) (NNS fats)) (-RRB- -RRB-)) (VP (VBN arranged) (PP (IN in) (NP (NP (DT a) (JJ sandwich-like) (JJ double) (NN layer)) (VP (VBN embedded) (PP (IN with) (NP (NNS proteins)))))))))) (. .)))
Cell membranes consist mainly of phospholipids (phosphorus-containing fats) arranged in a sandwich-like double layer embedded with proteins.
(ROOT (S (NP (NNS Phospholipids)) (VP (VBP are) (NP (NP (DT the) (JJ main) (NN component)) (PP (IN of) (NP (DT the) (NN cell) (NN membrane))))) (. .)))