( ( Ion channels ) ( ( are ( forms ( of ( ( ( passive transport ) , ) ( that ( ( is , ) ( ( the cell ) ( ( does not ) ( ( use ( its ( own ( energy supplies ) ) ) ) ( to ( ( transport ( the molecule ) ) ( ( ( into or ) out ) ( of ( the cell ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Ion) (NNS channels)) (VP (VBP are) (NP (NP (NNS forms)) (PP (IN of) (NP (NP (JJ passive) (NN transport)) (, ,) (SBAR (WHNP (WDT that)) (S (VP (VBZ is) (, ,) (SBAR (S (NP (DT the) (NN cell)) (VP (VBZ does) (RB not) (VP (VB use) (NP (PRP$ its) (JJ own) (NN energy) (NNS supplies)) (S (VP (TO to) (VP (VB transport) (NP (DT the) (NN molecule)) (PP (IN into) (CC or) (IN out) (PP (IN of) (NP (DT the) (NN cell)))))))))))))))))) (. .)))
Ion channels are forms of passive transport , that is, the cell does not use its own energy supplies to transport the molecule into or out of the 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)))))))))) (. .)))