( ( ( ( Protists , ) ( also ( ( referred to ) ( as protozoans ) ) ) ) , ) ( ( are ( ( one-celled organisms ) ( with ( ( ( a nucleus ) and ) ( complex ( cell organelles ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNS Protists)) (, ,) (VP (ADVP (RB also)) (VBN referred) (S (VP (TO to))) (PP (IN as) (NP (NNS protozoans)))) (, ,)) (VP (VBP are) (NP (NP (JJ one-celled) (NNS organisms)) (PP (IN with) (NP (NP (DT a) (NN nucleus)) (CC and) (NP (JJ complex) (NN cell) (NNS organelles)))))) (. .)))
Protists, also referred to as protozoans, are one-celled organisms with a nucleus and complex cell organelles.
(ROOT (S (NP (NP (DT The) (NNS cells)) (PP (IN of) (NP (DT all) (NNS protists)))) (VP (VBP have) (NP (DT a) (NN nucleus))) (. .)))