^Estimoted or calculated from ovailoble data. 

 "Initiol concentration. 

 ^Final concentration. 

 Decrease in log of molar concentration of oxidized 

 cytochrome c per minute for 1:150 tissue dilution. 

 ^Decrease in log of molar concentration of reduced 

 cytochrome c per minute for 1:100 tissue dilution. 



^Alog [cytochrome c]/mg. 



J [ferricytochrome c]/mg. protein/min. 



et wt,/min. 

 -^ l»9[ ■'_,.. 



"Moles substrate converted/kilo protein/hour (Fo 

 oxoplasm, protein = total protein; for sheoth, 

 protein of non>collagenous component). 

 'A log [ferricytochrome cl/mq. protein/min. 

 iA loglCyF,**]/min. 



Acti vity/mg. N when standard activity = 



A log (CyFe**) 



2Jt 



•^cti vity/mg. protein Wl 

 Alog [cytochrome c] 



At (min.) 



finol til 



> dilutic 



1^0" 



"imA moles cytochrome c reduced (mg. N)^ mm. 



"m/i moles DPNH oxidized (mg. N) ' min. _^ 



°mti moles cytochrome c oxidized (mg. N) min. 



^Moles cytochrome c reduced/mg. tissue/5 min. ' 

 10°C. (extinction coefficient of reduced cyto- 

 chrome c taken as 2.8x 10 ' cm.Vmol-)- 



'^O. D. of clear supernatant when measured at 520 m^ 



'^A 0. D./mg. protein/min. 



"Moles DPN reduced/g. wet wt./hr. 



'Additional respiratory data on invertebrate tissues 



present in original paper and not included in 



Section 2. 



