( ( ( ( These ( first ( eukaryotic cells ) ) ) ( ( evolved ( from ( prokaryotic cells ) ) ) ( after ( ( the ( plasma membrane ) ) ( of ( the cell ) ) ) ) ) ) ( -LRB- ( ( a ( phospholipid bilayer ) ) -RRB- ) ) ) ( ( ( ( infolded and ) formed ) ( organelles ( enclosed ( by ( membranes ( that ( ( were formerly ) ( part ( of ( the ( plasma membrane ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT These) (JJ first) (JJ eukaryotic) (NNS cells)) (VP (VBN evolved) (PP (IN from) (NP (JJ prokaryotic) (NNS cells))) (PP (IN after) (NP (NP (DT the) (NN plasma) (NN membrane)) (PP (IN of) (NP (DT the) (NN cell)))))) (PRN (-LRB- -LRB-) (NP (DT a) (JJ phospholipid) (NN bilayer)) (-RRB- -RRB-))) (VP (VBD infolded) (CC and) (VBD formed) (NP (NP (NNS organelles)) (VP (VBN enclosed) (PP (IN by) (NP (NP (NNS membranes)) (SBAR (WHNP (WDT that)) (S (VP (VBD were) (ADVP (RB formerly)) (NP (NP (NN part)) (PP (IN of) (NP (DT the) (NN plasma) (NN membrane)))))))))))) (. .)))
These first eukaryotic cells evolved from prokaryotic cells after the plasma membrane of the cell (a phospholipid bilayer) infolded and formed organelles enclosed by membranes that were formerly part of the plasma membrane.
(ROOT (S (NP (DT A) (NN plasma) (NN membrane)) (VP (VBZ encloses) (NP (NP (DT the) (NN border)) (PP (IN of) (NP (NN animal) (NNS cells))))) (. .)))