Abstract
THE recent measurements of the potassium ion activity in the cytoplasm of cells of Chara australis1 are of greater significance than the author suggests, because measurements of the ionic concentrations in the cytoplasm of other fresh water Characeae have already been made2,3. Comparison of activities and concentrations provides information about the state of the ions in the cytoplasm which may be used to test the “membrane” and “sorption”4,5 theories of ion transport.
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SPANSWICK, R. Measurements of Potassium Ion Activity in the Cytoplasm of the Characeae as a Test of the Sorption Theory. Nature 218, 357 (1968). https://doi.org/10.1038/218357a0
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DOI: https://doi.org/10.1038/218357a0
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