. Electrolytes in biological systems, incorporating papers presented at a symposium at the Marine Biological Laboratory in Woods Hole, Massachusetts, on September 8, 1954. Electrophysiology; Electrolytes; Electrolytes; Electrophysiology; Physiology, Comparative. lO ELECTROLYTES IN BIOLOGICAL SYSTEMS acetic acid soluble fraction of the cells. In addition to this metabolic uptake, further incorporation is observed when the cells grow. This later uptake (into the TCA precipitable fraction) corresponds to protein synthesis and is pro- portional to the quantity of new cells Fig. 3. Radiosul
. Electrolytes in biological systems, incorporating papers presented at a symposium at the Marine Biological Laboratory in Woods Hole, Massachusetts, on September 8, 1954. Electrophysiology; Electrolytes; Electrolytes; Electrophysiology; Physiology, Comparative. lO ELECTROLYTES IN BIOLOGICAL SYSTEMS acetic acid soluble fraction of the cells. In addition to this metabolic uptake, further incorporation is observed when the cells grow. This later uptake (into the TCA precipitable fraction) corresponds to protein synthesis and is pro- portional to the quantity of new cells Fig. 3. Radiosulfate uptake by T. iitilis. Curve A represents radioactivity of TC.\ soluble fraction observed during the growth of the cells, shown by Curve B. The ratio A/B indicates that no fixed quantity of sulfur is maintained in this fraction during growth. Figures 3 and 4 show these relations. A comparison of immediate uptake of sulfur in T. utilis and in E. coli cells is shown in table 6. In this experiment approximately equal quantities of washed T. utilis and E. coli cells were sus- pended in 2 ml of glucose-free, chilled synthetic medium containing radio- sulfate. The immediate sulfate uptake by each type of cell is indicated by the loss of radioactivity in the supernatant fluid. E. coli removed a total of 16% of the original radioactivity which corresponds to a water space of 75%.. 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 Shanes, Abraham M. (Abraham Morris), 1917-; Society of General Physiologists. Washington, American Physiological Society
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