( ( ( Certain molecules ) ( embedded ( in ( the ( plasma membrane ) ) ) ) ) ( ( are ( ( involved ( in ( ( the transport ) ( of ( necessary ( energy ( ( molecules and ) ions ) ) ) ) ) ) ) ( ( ( into and ) out ) ( of ( the cell ) ) ) ) ) . ) )
(ROOT (S (NP (NP (JJ Certain) (NNS molecules)) (VP (VBN embedded) (PP (IN in) (NP (DT the) (NN plasma) (NN membrane))))) (VP (VBP are) (VP (VBN involved) (PP (IN in) (NP (NP (DT the) (NN transport)) (PP (IN of) (NP (JJ necessary) (NN energy) (NNS molecules) (CC and) (NNS ions))))) (PP (IN into) (CC and) (IN out) (PP (IN of) (NP (DT the) (NN cell)))))) (. .)))
Certain molecules embedded in the plasma membrane are involved in the transport of necessary energy molecules and ions into and 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)))))))))) (. .)))