( ( ( ( ( They ( should ( know ( that ( diffusion ( is ( ( the movement ) ( of ( molecules ( from ( areas ( of ( ( high concentration ) ( to ( areas ( of ( low concentration ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) , ) and ) ( osmosis ( is ( ( the diffusion ) ( of ( water ( through ( a ( cell membrane ) ) ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (PRP They)) (VP (MD should) (VP (VB know) (SBAR (IN that) (S (NP (NN diffusion)) (VP (VBZ is) (NP (NP (DT the) (NN movement)) (PP (IN of) (NP (NP (NNS molecules)) (PP (IN from) (NP (NP (NNS areas)) (PP (IN of) (NP (NP (JJ high) (NN concentration)) (PP (TO to) (NP (NP (NNS areas)) (PP (IN of) (NP (JJ low) (NN concentration)))))))))))))))))) (, ,) (CC and) (S (NP (NNS osmosis)) (VP (VBZ is) (NP (NP (DT the) (NN diffusion)) (PP (IN of) (NP (NP (NN water)) (PP (IN through) (NP (DT a) (NN cell) (NN membrane)))))))) (. .)))
They should know that diffusion is the movement of molecules from areas of high concentration to areas of low concentration, and osmosis is the diffusion of water through a cell membrane.
(ROOT (S (NP (PRP You)) (VP (VBP call) (NP (NP (DT the) (NN movement)) (PP (IN of) (NP (DT a) (NN substance)))) (PP (IN from) (NP (NP (DT an) (NN area)) (PP (IN of) (NP (NP (DT a) (JJR higher) (NN amount)) (PP (IN toward) (NP (NP (DT an) (NN area)) (PP (IN of) (NP (JJR lower) (NN amount) (NN diffusion)))))))))) (. .)))