( ( ( ( ( ( ( The explanation ) ( that ( accompanies ( ( the diagrams ) ( ( includes ( the facts ) ) ( that ( ( cell respiration ) ( ( takes place ) ( in ( ( ( the mitochondrion ) , ) ( the ( inner membrane ) ) ) ) ) ) ) ) ) ) ) ) ( is ( where ( ( the ( aerobic reactions ) ) ( take place ) ) ) ) ) , ) and ) ( ( the mitochondria ) ( are ( believed ( to ( have ( ( evolved ( from prokaryotes ) ) ( because ( they ( have ( their ( own DNA ) ) ) ) ) ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (NP (DT The) (NN explanation)) (SBAR (WHNP (WDT that)) (S (VP (VBZ accompanies) (SBAR (S (NP (DT the) (NNS diagrams)) (VP (VBZ includes) (NP (DT the) (NNS facts)) (SBAR (IN that) (S (NP (NN cell) (NN respiration)) (VP (VBZ takes) (NP (NN place)) (PP (IN in) (NP (NP (DT the) (NN mitochondrion)) (, ,) (NP (DT the) (JJ inner) (NN membrane)))))))))))))) (VP (VBZ is) (SBAR (WHADVP (WRB where)) (S (NP (DT the) (JJ aerobic) (NNS reactions)) (VP (VBP take) (NP (NN place))))))) (, ,) (CC and) (S (NP (DT the) (NN mitochondria)) (VP (VBP are) (VP (VBN believed) (S (VP (TO to) (VP (VB have) (VP (VBN evolved) (PP (IN from) (NP (NNS prokaryotes))) (SBAR (IN because) (S (NP (PRP they)) (VP (VBP have) (NP (PRP$ their) (JJ own) (NN DNA)))))))))))) (. .)))
The explanation that accompanies the diagrams includes the facts that cell respiration takes place in the mitochondrion, the inner membrane is where the aerobic reactions take place, and the mitochondria are believed to have evolved from prokaryotes because they have their own DNA.
(ROOT (S (NP (NP (DT The) (NN structure)) (PP (IN of) (NP (NN mitochondrion)))) (VP (VBZ plays) (NP (NP (DT an) (JJ important) (NN role)) (PP (IN in) (NP (JJ aerobic) (NN respiration))))) (. .)))