( ( In contrast ) ( , ( ( ( a ( prokaryotic cell ) ) ( -LRB- ( right -RRB- ) ) ) ( ( ( ( ( does not ) ( have ( membrane-bound DNA ) ) ) and ) ( also ( ( lacks ( other ( membrane-bound organelles ) ) ) ( as well ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN In) (NP (NN contrast))) (, ,) (NP (NP (DT a) (JJ prokaryotic) (NN cell)) (PRN (-LRB- -LRB-) (NP (NN right)) (-RRB- -RRB-))) (VP (VP (VBZ does) (RB not) (VP (VB have) (NP (JJ membrane-bound) (NN DNA)))) (CC and) (VP (ADVP (RB also)) (VBZ lacks) (NP (JJ other) (JJ membrane-bound) (NNS organelles)) (ADVP (RB as) (RB well)))) (. .)))
In contrast, a prokaryotic cell (right) does not have membrane-bound DNA and also lacks other membrane-bound organelles as well.
(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.