( ( As ( ( the concentration ) ( of ( oxygen increases ) ) ) ) ( , ( ( the ( oxygen diffusesinto ) ) ( ( ( ( ( the ( blood cells ) ) , ) ( where ( it ( ( ( binds ( with ( hemoglobin ( -LRB- ( Hb -RRB- ) ) ) ) ) and ) ( becomes oxyhemoglobin ) ) ) ) ) ( -LRB- ( ( O ( 2 Hb ) ) -RRB- ) ) ) . ) ) ) )
(ROOT (S (PP (IN As) (NP (NP (DT the) (NN concentration)) (PP (IN of) (NP (NN oxygen) (NNS increases))))) (, ,) (NP (DT the) (NN oxygen) (NN diffusesinto)) (VP (NP (NP (DT the) (NN blood) (NNS cells)) (, ,) (SBAR (WHADVP (WRB where)) (S (NP (PRP it)) (VP (VP (VBZ binds) (PP (IN with) (NP (NP (NN hemoglobin)) (PRN (-LRB- -LRB-) (NP (NNP Hb)) (-RRB- -RRB-))))) (CC and) (VP (VBZ becomes) (NP (NN oxyhemoglobin))))))) (PRN (-LRB- -LRB-) (NP (NNP O) (QP (CD 2) (CD Hb))) (-RRB- -RRB-))) (. .)))
As the concentration of oxygen increases, the oxygen diffusesinto the blood cells, where it binds with hemoglobin (Hb) and becomes oxyhemoglobin (O 2 Hb).
(ROOT (S (NP (NNP Hemoglobin)) (VP (VBZ is) (NP (NP (DT a) (NN carrier) (NN molecule)) (SBAR (WHNP (WDT that)) (S (VP (VBZ becomes) (ADJP (RBR less) (JJ effective) (PP (IN at) (NP (NP (VBG binding) (NN oxygen)) (PP (IN as) (NP (NN temperature) (NNS increases))))))))))) (. .)))