( ( Diffusion ( across ( this membrane ) ) ) ( ( is ( ( the ( net movement ) ) ( of ( molecules ( in ( ( a fluid ) ( from ( ( the regions ) ( of ( ( high concentation ) ( to ( regions ( of ( low concentration ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP Diffusion)) (PP (IN across) (NP (DT this) (NN membrane)))) (VP (VBZ is) (NP (NP (DT the) (JJ net) (NN movement)) (PP (IN of) (NP (NP (NNS molecules)) (PP (IN in) (NP (NP (DT a) (NN fluid)) (PP (IN from) (NP (NP (DT the) (NNS regions)) (PP (IN of) (NP (NP (JJ high) (NN concentation)) (PP (TO to) (NP (NP (NNS regions)) (PP (IN of) (NP (JJ low) (NN concentration))))))))))))))) (. .)))
Diffusion across this membrane is the net movement of molecules in a fluid from the regions of high concentation to regions of low concentration.
(ROOT (S (NP (NNP Diffusion)) (VP (VBZ is) (NP (NP (DT the) (NN term)) (PP (IN for) (NP (NP (DT the) (NN movement)) (PP (IN of) (NP (NP (NNS molecules)) (PP (IN from) (NP (NP (DT an) (NN area)) (PP (IN of) (NP (NP (JJ high) (NN concentration)) (PP (TO to) (NP (NP (DT an) (NN area)) (PP (IN of) (NP (JJ low) (NN concentration))))))))))))))) (. .)))