( ( Respiration ( also ( ( refers ( to ( the conversion ) ) ) ( by ( ( a cell ) ( of ( molecules ( such ( as ( ( ( carbohydrates and ) fats ) ( to energy ) ) ) ) ) ) ) ) ) ) ) ( , ( ( a process ) ( ( called ( cellular respiration ) ) . ) ) ) )
(ROOT (S (S (NP (NNP Respiration)) (ADVP (RB also)) (VP (VBZ refers) (PP (TO to) (NP (DT the) (NN conversion))) (PP (IN by) (NP (NP (DT a) (NN cell)) (PP (IN of) (NP (NP (NNS molecules)) (PP (JJ such) (IN as) (NP (NP (NNS carbohydrates) (CC and) (NNS fats)) (PP (TO to) (NP (NN energy))))))))))) (, ,) (NP (DT a) (NN process)) (VP (VBD called) (NP (JJ cellular) (NN respiration))) (. .)))
Respiration also refers to the conversion by a cell of molecules such as carbohydrates and fats to energy, a process called cellular respiration.
(ROOT (S (PP (IN As) (NP (NP (DT a) (NN result)) (PP (IN of) (NP (JJ cellular) (NN respiration))))) (, ,) (NP (NP (NN energy)) (PP (IN for) (NP (NN cell) (NNS processes)))) (VP (VBZ is) (VP (VBN released))) (. .)))