( Energy ( ( is ( required ( ( ( to ( ( ( break down ) and ) ( ( build up ) molecules ) ) ) and ) ( to ( ( transport molecules ) ( across ( plasma membranes ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Energy)) (VP (VBZ is) (VP (VBN required) (S (VP (VP (TO to) (VP (VP (VB break) (PRT (RP down))) (CC and) (VP (VB build) (PRT (RP up)) (NP (NNS molecules))))) (CC and) (VP (TO to) (VP (VB transport) (NP (NNS molecules)) (PP (IN across) (NP (NN plasma) (NNS membranes))))))))) (. .)))
Energy is required to  break down and build up molecules and to transport molecules across plasma membranes.
(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))))))) (. .)))