( ( For ( other species ) ) ( it ( ( may ( ( ( entail transport ) ( ( ( ( across ( a ( biological membrane ) ) ) or ) ( into ( a vacuole ) ) ) directly ) ) ( from ( the ( external medium ) ) ) ) ) . ) ) )
(ROOT (S (PP (IN For) (NP (JJ other) (NNS species))) (NP (PRP it)) (VP (MD may) (VP (VB entail) (NP (NN transport)) (PP (PP (IN across) (NP (DT a) (JJ biological) (NN membrane))) (CC or) (PP (IN into) (NP (DT a) (NN vacuole))) (ADVP (RB directly))) (PP (IN from) (NP (DT the) (JJ external) (NN medium))))) (. .)))
For other species it may entail transport across a biological membrane or into a vacuole directly from the external medium.
(ROOT (S (NP (NP (DT The) (NN name)) (PP (IN for) (NP (NP (JJ membrane-bound) (NNS sacs)) (SBAR (WHNP (WDT that)) (S (VP (VBP function) (PP (IN in) (NP (NN storage) (CC and) (NN transport))))))))) (VP (VBZ is) (ADJP (JJ vacuoles))) (. .)))