( PROTEINS ( ( are ( ( ( needed ( for growth ) ) , ) ( ( ( building muscles ) and ) ( repairing tissues ) ) ) ) . ) )
(ROOT (S (NP (NNS PROTEINS)) (VP (VBP are) (VP (VBN needed) (PP (IN for) (NP (NN growth))) (, ,) (S (VP (VP (VBG building) (NP (NNS muscles))) (CC and) (VP (VBG repairing) (NP (NNS tissues))))))) (. .)))
PROTEINS are needed for growth, building muscles and repairing tissues.
(ROOT (S (NP (NNP Protein)) (VP (VBZ is) (NP (NP (DT an) (JJ important) (NN part)) (PP (IN of) (NP (DT a) (JJ healthy) (NN diet)))) (SBAR (IN because) (S (NP (PRP it)) (VP (VBZ is) (VP (VBN needed) (S (VP (TO to) (VP (VB repair) (NP (NN tissue)))))))))) (. .)))