( Scientists ( ( have ( determined ( that ( it ( ( is not ) ( in ( ( ( ( ( ( ( the nucleus ) , ) ( the ( cell membrane ) ) ) nor ) all ) over ) ( the cytoplasm ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Scientists)) (VP (VBP have) (VP (VBN determined) (SBAR (IN that) (S (NP (PRP it)) (VP (VBZ is) (RB not) (PP (IN in) (NP (NP (DT the) (NN nucleus)) (, ,) (NP (DT the) (NN cell) (NN membrane)) (CC nor) (RB all) (IN over) (NP (DT the) (NN cytoplasm))))))))) (. .)))
Scientists have determined that it is not in the nucleus, the cell membrane nor all over the cytoplasm.
(ROOT (S (NP (NP (DT The) (NNS cells)) (PP (IN of) (NP (DT all) (NNS protists)))) (VP (VBP have) (NP (DT a) (NN nucleus))) (. .)))