( ( ( The ( temperature optimum ) ) ( for ( enzyme activity ) ) ) ( ( is ( ( 40 C ) ( at ( pH 8.0 ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN temperature) (NN optimum)) (PP (IN for) (NP (JJ enzyme) (NN activity)))) (VP (VBZ is) (NP (NP (CD 40) (NNS C)) (PP (IN at) (NP (NNP pH) (CD 8.0))))) (. .)))
The temperature optimum for enzyme activity is 40 C at pH 8.0.
(ROOT (S (NP (NP (NNP Temperature)) (CC and) (NP (NN ph) (NN level))) (VP (VBP are) (ADJP (JJ important) (PP (IN in) (NP (NP (DT the) (NN activity)) (PP (IN of) (NP (DT an) (NN enzyme))))))) (. .)))