( Active ( ( ( Transport ( ( The movement ) ( of ( a substance ) ) ) ) ( across ( ( a membrane ) ( requiring energy ) ) ) ) . ) )
(ROOT (S (NP (NNP Active)) (VP (VBD Transport) (NP (NP (DT The) (NN movement)) (PP (IN of) (NP (DT a) (NN substance)))) (PP (IN across) (NP (NP (DT a) (NN membrane)) (VP (VBG requiring) (NP (NN energy)))))) (. .)))
Active Transport The movement of a substance across a membrane requiring energy.
(ROOT (S (NP (PRP You)) (VP (VBP call) (NP (NP (DT the) (NN movement)) (PP (IN of) (NP (NP (NNS molecules)) (PP (IN across) (NP (DT a) (ADJP (JJ membrane) (PP (IN without) (NP (NP (DT the) (NN input)) (PP (IN of) (NP (NN energy)))))) (JJ passive) (NN transport))))))) (. .)))