( ( ( A ( Closer Look ) ) ( at Cell ) ) ( ( Membranes ( Be ( able ( to ( compare ( ( the ( two models ) ) ( of ( membrane structure ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT A) (JJ Closer) (NN Look)) (PP (IN at) (NP (NNP Cell)))) (VP (VBZ Membranes) (VP (VB Be) (ADJP (JJ able) (S (VP (TO to) (VP (VB compare) (NP (NP (DT the) (CD two) (NNS models)) (PP (IN of) (NP (JJ membrane) (NN structure)))))))))) (. .)))
A Closer Look at Cell Membranes Be able to compare the two models of membrane structure.
(ROOT (S (NP (CD Two) (NNS membranes)) (VP (VBP form) (NP (NP (DT the) (NN mitochondrion) (NN structure)) (PP (IN of) (NP (DT a) (NN cell))))) (. .)))