( ( The ( microchannel ( s function ) ) ) ( ( is ( to ( ( ( transport ( small ( ( ions and ) molecules ) ) ) ( from cell ) ) ( to cell ) ) ) ) . ) )
(ROOT (S (NP (DT The) (JJ microchannel) (NN s) (NN function)) (VP (VBZ is) (S (VP (TO to) (VP (VB transport) (NP (JJ small) (NNS ions) (CC and) (NNS molecules)) (PP (IN from) (NP (NN cell))) (PP (TO to) (NP (NN cell))))))) (. .)))
The microchannel s function is to transport small ions and molecules from cell to cell.
(ROOT (S (NP (DT The) (NN term) (JJ passive) (NN transport)) (VP (VBZ describes) (NP (DT a) (NN way)) (SBAR (IN that) (S (NP (JJ small) (NNS molecules) (CC or) (NNS ions)) (VP (VBP move) (PP (IN across) (NP (NP (DT the) (NN cell)) (VP (VBN membrane) (PP (IN without) (NP (NP (NN input)) (PP (IN of) (NP (NN energy))))) (PP (IN by) (NP (DT the) (NN cell)))))))))) (. .)))