( ( ( passive-mediated ( transport ( or ( facilitated diffusion ) ) ) ) ( with ( specific molecules ) ) ) ( ( ( flow ( from ( high concentration ) ) ) ( to ( low concentration ) ) ) . ) )
(ROOT (S (NP (NP (JJ passive-mediated) (NN transport) (CC or) (NN facilitated) (NN diffusion)) (PP (IN with) (NP (JJ specific) (NNS molecules)))) (VP (VBP flow) (PP (IN from) (NP (JJ high) (NN concentration))) (PP (TO to) (NP (JJ low) (NN concentration)))) (. .)))
passive-mediated transport or facilitated diffusion with specific molecules flow from high concentration to low concentration.
(ROOT (S (NP (NNP Passive) (NN transport)) (VP (VP (VBZ requires) (NP (DT no) (NN energy))) (CC and) (VP (VBZ occurs) (SBAR (WHADVP (WRB when)) (S (NP (NNS substances)) (VP (VBP move) (PP (IN from) (NP (NP (NNS areas)) (PP (IN of) (NP (NP (JJR higher)) (PP (TO to) (NP (JJR lower) (NN concentration)))))))))))) (. .)))