( ( ( ( ( Primary ( active transport ) ) , ) ( also ( called ( direct ( active transport ) ) ) ) ) , ) ( directly ( ( uses ( metabolic ( energy ( to ( ( transport molecules ) ( across ( a membrane ) ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (NP (JJ Primary) (JJ active) (NN transport)) (, ,) (VP (ADVP (RB also)) (VBN called) (NP (JJ direct) (JJ active) (NN transport))) (, ,)) (ADVP (RB directly)) (VP (VBZ uses) (NP (JJ metabolic) (NN energy) (S (VP (TO to) (VP (VB transport) (NP (NNS molecules)) (PP (IN across) (NP (DT a) (NN membrane)))))))) (. .)))
Primary active transport, also called direct active transport, directly uses metabolic energy to transport molecules across a membrane.
(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))))))) (. .)))