( ( ( ( plasma membrane ) -- ) ( ( ( energy dependent ) ( transport systems ) ) 4 ) ) . )
(ROOT (NP (NP (NN plasma) (NNS membrane)) (: --) (NP (NP (ADJP (NP (NN energy)) (JJ dependent)) (NN transport) (NNS systems)) (NP (CD 4))) (. .)))
plasma membrane --energy dependent transport systems 4.
(ROOT (S (NP (NNP Passive) (NN transport)) (VP (VBZ occurs) (SBAR (WHADVP (WRB when)) (S (NP (NNS substances)) (VP (VBP cross) (NP (DT the) (NN plasma) (NN membrane)) (PP (IN without) (NP (NP (DT any) (NN input)) (PP (IN of) (NP (NN energy))))) (PP (IN from) (NP (DT the) (NN cell))))))) (. .)))