( ( ( 1 -RRB- ) ( Cell surface ) ) ( -LRB- ( plasma ( membrane -RRB- ) ) ) )
(ROOT (NP (NP (LST (LS 1) (-RRB- -RRB-)) (NP (NNP Cell)) (PP (IN surface))) (NP (-LRB- -LRB-) (NNP plasma) (NNP membrane) (-RRB- -RRB-))))
1) Cell surface (plasma membrane)
(ROOT (S (NP (DT The) (NN plasma) (NN membrane)) (VP (VBZ controls) (SBAR (WHNP (WP what)) (S (VP (VBZ goes) (PRT (RP in) (CC and) (RP out)) (PP (IN of) (NP (DT a) (NN cell))))))) (. .)))
The plasma membrane controls what goes in and out of a cell.