( ( ( Sugars and ) starches ) ( ( ( ( ( are ( ( carbohydrates , ) ( of course ) ) ) , ) and ) ( can ( be ( ( used ( as ( energy molecules ) ) ) ( as ( described above ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Sugars) (CC and) (NNS starches)) (VP (VP (VBP are) (NP (NP (NNS carbohydrates)) (, ,) (PP (IN of) (NP (NN course))))) (, ,) (CC and) (VP (MD can) (VP (VB be) (VP (VBN used) (PP (IN as) (NP (NN energy) (NNS molecules))) (SBAR (IN as) (S (VP (VBD described) (ADVP (RB above))))))))) (. .)))
Sugars and starches are carbohydrates, of course, and can be used as energy molecules as described above.
(ROOT (S (NP (NNS Carbohydrates)) (VP (VBP are) (NP (NP (DT an) (JJ important) (NN group)) (PP (IN of) (NP (JJ biological) (NNS molecules))) (SBAR (WHNP (WDT that)) (S (VP (VBZ includes) (NP (NNS sugars) (CC and) (NNS starches))))))) (. .)))