Section 3: ANALYSIS OF DATA 



EFFECTS OF CERTAIN INHIBITORS ON RESPIRATORY RATE 



2, 4-DINITROPHENOL (DNP) 



Effect: Respiration maximally stimulated by the concentration of DNP that produces maximal inhibi- 

 tion of ciliary activity; this effect noted in: 

 MoUusca 

 Pelecypoda 

 Crassostrea virginica: Mantle; Maroney, Barber, and Wilbur, 1957 

 Mytiliis: Gill; Weller and Ronkin, 1952 

 Effect: Rise in respiratory rate; this effect noted in: 

 Aschelminthes 

 Nematoda 

 Ascaris lumbricoides: Muscle; Chin and Bueding, 1954 

 Mollusca 

 Pelecypoda 

 Pinctada martensii: Gill; Kawai, 1957 

 Effect: Stability of rate of esterification of phosphate in suspension to which DNP has been added; 

 suggests that the phosphorylations result from anaerobic reactions; this effect noted in: 

 Mollusca 

 Gastropoda 

 Helix pomatia: Midgut gland; Rees, 1953 



CARBON MONOXIDE (CO) 



Effect: Photoreversible inhibition of respiration, i.e., inhibition of respiration by CO in darkness 



but not in light; strongly suggests the involvement of cytochrome oxidase in the electron trans- 

 port system; this effect noted in: 

 Mollusca 

 Pelecypoda 



Crassostrea gigas: Gill, mantle; Kawai, 1958 

 Cephalopoda 

 Octopus macropus: Salivary gland; Ghiretti-Magaldi, Giuditta, and Ghiretti, 1958 



CYANIDE 



Effect: Inhibition of endogenous respiration; may indicate the involvement of cytochrome oxidase in 

 the electron transport system; effect noted in: 

 Porifera 

 Demospongia 



Cinachyra cavernosa, Dysidea crawshayi, Geodia gibberosa, Ircinia fasciculata, Lissodendoryx 

 isodictyalis , Pseudaxinella rosacea, Spheciospongia sp., Tedania ignis, Terpios fugax, Tethya 

 aurantia: Slices; Robbie, 1949 



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