Permeability of Valonia to water and solutes: apparent absence of aqueous membrane pores.

@article{Gutknecht1968PermeabilityOV,
  title={Permeability of Valonia to water and solutes: apparent absence of aqueous membrane pores.},
  author={Juergen Gutknecht},
  journal={Biochimica et biophysica acta},
  year={1968},
  volume={163 1},
  pages={
          20-9
        }
}
Abstract The permeability of the marine alga Valonia ventricosa to water and small solutes was studied in cells perfused internally by two micropipets inserted into the vacuole. The protoplast of Valonia was highly permeable to alcohols but relatively impermeable to water and small hydrophilic solutes. For methanol the permeability coefficient of the protoplast was 3.1 · 10 −4 cm · sec −1 , and the reflection coefficient was highly negative, about −1.3. The permeability coefficient for urea, on… CONTINUE READING
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