( ( Without oxygen ) ( , ( ( cellular respiration ) ( ( ( ( grinds ( to ( ( a stand ) still ) ) ) , ) ( although ( glycolysis ( can ( continue ( to ( ( ( make ATP ) anaerobically ) ( for ( a ( short time ) ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN Without) (NP (NN oxygen))) (, ,) (NP (JJ cellular) (NN respiration)) (VP (VBZ grinds) (PP (TO to) (NP (NP (DT a) (NN stand)) (ADVP (RB still)))) (, ,) (SBAR (IN although) (S (NP (NNS glycolysis)) (VP (MD can) (VP (VB continue) (S (VP (TO to) (VP (VB make) (NP (NNP ATP)) (ADVP (RB anaerobically)) (PP (IN for) (NP (DT a) (JJ short) (NN time))))))))))) (. .)))
Without oxygen, cellular respiration grinds to a stand still, although glycolysis can continue to make ATP anaerobically for a short time.
(ROOT (S (NP (PRP You)) (VP (VBP call) (NP (NP (JJ cellular) (NN respiration)) (SBAR (WHNP (WDT that)) (S (VP (VBZ does) (RB not) (VP (VB need) (NP (NN oxygen)) (S (VP (TO to) (VP (VB proceed) (NP (JJ anaerobic) (NN respiration))))))))))) (. .)))