( ( ( hydrocarbon and ) lipid ) ( metabolism . ) )
(ROOT (S (NP (NN hydrocarbon) (CC and) (NN lipid)) (VP (VBZ metabolism)) (. .)))
hydrocarbon and lipid metabolism.
(ROOT (S (NP (DT A) (NN lipid)) (VP (VBZ is) (NP (NP (CD one)) (PP (IN of) (NP (NP (DT a) (ADJP (RB highly) (JJ diverse)) (NN group)) (PP (IN of) (NP (NP (NNS compounds)) (VP (VBN made) (PRT (RP up)) (ADVP (RB mostly))))) (PP (IN of) (NP (NNS hydrocarbons))))))) (. .)))