( ( ( ( ( A ( nuclear membrane ) ) , ) ( also ( known ( as ( the ( nuclear ( envelope ( , ( ( nucleolemma or ) karyotheca ) ) ) ) ) ) ) ) ) , ) ( ( is ( ( the ( double ( lipid ( bilayer membrane ) ) ) ) ( which ( ( surrounds ( the ( genetic ( ( material and ) nucleolus ) ) ) ) ( in ( eukaryotic cells ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT A) (JJ nuclear) (NN membrane)) (, ,) (VP (ADVP (RB also)) (VBN known) (PP (IN as) (NP (DT the) (JJ nuclear) (NN envelope) (, ,) (NN nucleolemma) (CC or) (NN karyotheca)))) (, ,)) (VP (VBZ is) (NP (NP (DT the) (JJ double) (NN lipid) (NN bilayer) (NN membrane)) (SBAR (WHNP (WDT which)) (S (VP (VBZ surrounds) (NP (DT the) (JJ genetic) (NN material) (CC and) (NNS nucleolus)) (PP (IN in) (NP (JJ eukaryotic) (NNS cells)))))))) (. .)))
A nuclear membrane, also known as the nuclear envelope, nucleolemma or karyotheca, is the double lipid bilayer membrane which surrounds the genetic material and nucleolus in eukaryotic cells.
(ROOT (S (NP (NNP Nuclear) (NNP enevelope)) (VP (VBZ is) (NP (NP (DT a) (JJ double) (NN membrane)) (PP (IN of) (NP (NP (DT the) (NN nucleus)) (SBAR (WHNP (WDT that)) (S (VP (VBZ encloses) (NP (DT the) (JJ genetic) (NN material))))))))) (. .)))