( ( ( ( Prokaryotes ( have ( an ( outer ( plasma membrane ) ) ) ) ) and ) ( some ( also ( have ( a ( cell wall ) ) ) ) ) ) . )
(ROOT (S (S (NP (NNS Prokaryotes)) (VP (VBP have) (NP (DT an) (JJ outer) (NN plasma) (NN membrane)))) (CC and) (S (NP (DT some)) (ADVP (RB also)) (VP (VBP have) (NP (DT a) (NN cell) (NN wall)))) (. .)))
Prokaryotes have an outer plasma membrane and some also have a cell wall.
(ROOT (S (NP (JJ Prokaryotic) (NNS cells)) (VP (VBP have) (NP (NP (DT a) (NN cell) (NN wall)) (PP (IN outside) (NP (PRP$ their) (NN plasma) (NN membrane))))) (. .)))