( ( Even ( though ( it ( ( is not ) ( indicated ( on ( this diagram ) ) ) ) ) ) ) ( , ( there ( ( is ( ( another ( ( extremely important ) step ) ) ( in ( aerobic respiration ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (RB Even) (IN though) (S (NP (PRP it)) (VP (VBZ is) (RB not) (VP (VBN indicated) (PP (IN on) (NP (DT this) (NN diagram))))))) (, ,) (NP (EX there)) (VP (VBZ is) (NP (NP (DT another) (ADJP (RB extremely) (JJ important)) (NN step)) (PP (IN in) (NP (JJ aerobic) (NN respiration))))) (. .)))
Even though it is not indicated on this diagram, there is another extremely important step in aerobic respiration.
(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))))) (. .)))