( ( Enzyme activity ) ( ( ( ( is ( sensitive ( to ( ( pH and ) temperature ) ) ) ) , ) ( with ( ( particular enzymes ) ( optimized ( to ( ( work best ) ( under ( particular conditions ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Enzyme) (NN activity)) (VP (VBZ is) (ADJP (JJ sensitive) (PP (TO to) (NP (NN pH) (CC and) (NN temperature)))) (, ,) (PP (IN with) (NP (NP (JJ particular) (NNS enzymes)) (VP (VBN optimized) (S (VP (TO to) (VP (VB work) (ADVP (RBS best)) (PP (IN under) (NP (JJ particular) (NNS conditions)))))))))) (. .)))
Enzyme activity is sensitive to pH and temperature , with particular enzymes optimized to work best under particular conditions.
(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))))))) (. .)))