( ( ( ( ( ( ( ( ( Prokaryotes ( lack ( membrane-bound ( ( organelles and ) microtubules ) ) ) ) , ) ( ( their DNA ) ( ( is not ) ( associated ( with proteins ) ) ) ) ) , ) ( ( their ( sexual recombination ) ) ( is different ) ) ) , ) and ) ( ( their ( cell walls ) ) ( contain ( muramic acid ) ) ) ) . )
(ROOT (S (S (NP (NNS Prokaryotes)) (VP (VBP lack) (NP (JJ membrane-bound) (NNS organelles) (CC and) (NNS microtubules)))) (, ,) (S (NP (PRP$ their) (NN DNA)) (VP (VBZ is) (RB not) (VP (VBN associated) (PP (IN with) (NP (NNS proteins)))))) (, ,) (S (NP (PRP$ their) (JJ sexual) (NN recombination)) (VP (VBZ is) (ADJP (JJ different)))) (, ,) (CC and) (S (NP (PRP$ their) (NN cell) (NNS walls)) (VP (VBP contain) (NP (JJ muramic) (NN acid)))) (. .)))
Prokaryotes lack membrane-bound organelles and microtubules, their DNA is not associated with proteins, their sexual recombination is different, and their cell walls contain muramic acid.
(ROOT (S (NP (NP (JJ Prokaryotic) (NNS cells) (POS ')) (NNS organelles)) (ADVP (RB because) (RB not)) (VP (VBD membrane-bound)) (. .)))