( ( The ( term metabolism ) ) ( ( refers ( to ( ( ( the ( various series ) ) ( of ( chemical reactions ) ) ) ( that ( ( take place ) ( within ( the body ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN term) (NN metabolism)) (VP (VBZ refers) (PP (TO to) (NP (NP (DT the) (JJ various) (NN series)) (PP (IN of) (NP (NN chemical) (NNS reactions))) (SBAR (WHNP (WDT that)) (S (VP (VBP take) (NP (NN place)) (PP (IN within) (NP (DT the) (NN body))))))))) (. .)))
The term metabolism refers to the various series of chemical reactions that take place within the body.
(ROOT (S (NP (NP (DT The) (NN sum)) (PP (IN of) (NP (NP (DT all) (JJ chemical) (NNS reactions)) (SBAR (WHNP (WDT that)) (S (VP (VBP take) (NP (NN place)) (PP (IN within) (NP (DT an) (NN organism))))))))) (VP (VBZ is) (VP (VBN known) (PP (IN as) (NP (NN metabolism))))) (. .)))
The sum of all chemical reactions that take place within an organism is known as metabolism.