( ( ( Sketch plots ) ( ( ( that ( describe ( the ( active transport ) ) ) ) and ) ( ( the ( passive diffusion ) ) ( of ( ( this substance ) ( across ( a ( cell membrane ) ) ) ) ) ) ) ) . )
(ROOT (S (VP (VB Sketch) (NP (NNS plots)) (NP (NP (SBAR (WHNP (WDT that)) (S (VP (VBP describe) (NP (DT the) (JJ active) (NN transport)))))) (CC and) (NP (NP (DT the) (JJ passive) (NN diffusion)) (PP (IN of) (NP (NP (DT this) (NN substance)) (PP (IN across) (NP (DT a) (NN cell) (NN membrane)))))))) (. .)))
Sketch plots that describe the active transport and the passive diffusion of this substance across a cell membrane.
(ROOT (S (SBAR (WHADVP (WRB When)) (S (NP (NNS substances)) (VP (VBP pass) (PP (IN through) (NP (DT the) (NN cell) (NN membrane))) (PP (IN without) (S (VP (VBG needing) (NP (DT any) (NN energy)))))))) (, ,) (NP (PRP it)) (VP (VBZ is) (VP (VBN called) (NP (JJ passive) (NN transport)))) (. .)))