( ( Prokaryotic Cells ) ( ( are ( cells ( that ( have ( to ( have ( organelles ( that ( ( ( ( are not ) ( surrounded ( by ( a membrane ) ) ) ) and ) ( do ( have ribosomes ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Prokaryotic) (NNP Cells)) (VP (VBP are) (NP (NP (NNS cells)) (SBAR (WHNP (WDT that)) (S (VP (VBP have) (S (VP (TO to) (VP (VB have) (NP (NP (NNS organelles)) (SBAR (WHNP (WDT that)) (S (VP (VP (VBP are) (RB not) (VP (VBN surrounded) (PP (IN by) (NP (DT a) (NN membrane))))) (CC and) (VP (VBP do) (VP (VB have) (NP (NNS ribosomes)))))))))))))))) (. .)))
Prokaryotic Cells are cells that have to have organelles that are not surrounded by a membrane and do have ribosomes.
(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.