( ( Cell membranes ) ( ( are ( built ( from ( ( two layers ) ( of ( ( ( ( phospholipids , ) ( molecules ( with ( water-loving heads ) ) ) ) and ) ( water-hating tails ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Cell) (NNS membranes)) (VP (VBP are) (VP (VBN built) (PP (IN from) (NP (NP (CD two) (NNS layers)) (PP (IN of) (NP (NP (NNS phospholipids)) (, ,) (NP (NP (NNS molecules)) (PP (IN with) (NP (JJ water-loving) (NNS heads)))) (CC and) (NP (JJ water-hating) (NNS tails)))))))) (. .)))
Cell membranes are built from two layers of phospholipids, molecules with water-loving heads and water-hating tails.
(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)))))) (. .)))