. The chemistry and physiology of growth. Growth; Biochemistry. CELLULAR METABOLISM 113 200 100. -300 -200 Figure i. Relation between the catalytic power of dyes and its Eo to the oxidation- reduction potential of starfish eggs. (Dyes which penetrate through the cell wall.) Abscissa, Eo (in millivolts) of dyes at /'H Ordinate, per cent increase of O2 con- sumption after dye addition, i. phenol-indophenol; 2. toluylene blue chloride; 3. methy- lene blue; 4. cresyl blue; 7. cresyl violet; 8. safranine; 9. janus green; 10. neutral red. From Barron and Hoffman, /. Gen. Physiol., 13, 483, 1930
. The chemistry and physiology of growth. Growth; Biochemistry. CELLULAR METABOLISM 113 200 100. -300 -200 Figure i. Relation between the catalytic power of dyes and its Eo to the oxidation- reduction potential of starfish eggs. (Dyes which penetrate through the cell wall.) Abscissa, Eo (in millivolts) of dyes at /'H Ordinate, per cent increase of O2 con- sumption after dye addition, i. phenol-indophenol; 2. toluylene blue chloride; 3. methy- lene blue; 4. cresyl blue; 7. cresyl violet; 8. safranine; 9. janus green; 10. neutral red. From Barron and Hoffman, /. Gen. Physiol., 13, 483, 1930. TABLE VIII The Effect of Reversible Dyes on the Oxygen Consumption of Starfish Eggs (Mature, Unfertilized). The Efifect of the Membrane Permeability. Eo'at/'H in volts Oxygen consumption per hour in cmm. Permeability of membrane Name of dye Before dye addition After dye addition Per cent increase Gallocyanine + 337 does not penetrate 46 Methylene blue 23-3 85-5 penetrates 267 Indigodisulphonate — does not penetrate none Cresyl violet — 25-3 penetrates 160. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Parpart, Arthur Kemble, 1903-; Princeton University; Northrop, John Howard, 1891-. Princeton, Princeton Univ. Press
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