( ( ( prokaryote ( A ( unicellular organism ) ) ) ( with ( ( ( ( ( ( a ( single chromosome ) ) , ) ( no ( nuclear envelope ) ) ) , ) and ) ( no ( membrane-bounded organelles ) ) ) ) ) . )
(ROOT (S (VP (VB prokaryote) (NP (DT A) (NN unicellular) (NN organism)) (PP (IN with) (NP (NP (DT a) (JJ single) (NN chromosome)) (, ,) (NP (DT no) (JJ nuclear) (NN envelope)) (, ,) (CC and) (NP (DT no) (JJ membrane-bounded) (NNS organelles))))) (. .)))
prokaryote A unicellular organism with a single chromosome, no nuclear envelope, and no membrane-bounded organelles.
(ROOT (S (NP (NNS Prokaryotes)) (VP (VBP are) (NP (NN unicellular) (NNS organisms)) (SBAR (IN that) (S (NP (NN lack) (NNS organelles)) (VP (VBN surrounded) (PP (IN by) (NP (NNS membranes))))))) (. .)))
Prokaryotes are unicellular organisms that lack organelles surrounded by membranes.