( ( In biochemistry ) ( ( ( ( the process ) ( of ( ( breaking down ) ( large molecules ) ) ) ) ( -LRB- ( ( by ( splitting ( their ( internal bonds ) ) ) ) -RRB- ) ) ) ( ( is catabolism ) . ) ) )
(ROOT (S (PP (IN In) (NP (NN biochemistry))) (NP (NP (DT the) (NN process)) (PP (IN of) (S (VP (VBG breaking) (PRT (RP down)) (NP (JJ large) (NNS molecules))))) (PRN (-LRB- -LRB-) (PP (IN by) (S (VP (VBG splitting) (NP (PRP$ their) (JJ internal) (NNS bonds))))) (-RRB- -RRB-))) (VP (VBZ is) (NP (NN catabolism))) (. .)))
In biochemistry the process of breaking down large molecules (by splitting their internal bonds) is catabolism.
(ROOT (S (NP (JJ Catabolic) (NNS reactions)) (VP (VBP involve) (S (VP (VBG breaking) (NP (NNS bonds))))) (. .)))