The Journal of General Physiology
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The Journal of General Physiology, Vol 13, 695-713, Copyright © 1930 by The Rockefeller University Press

ARTICLE

THE KINETICS OF PENETRATION

II. THE PENETRATION OF CO2 INTO VALONIA



A. G. Jacques 1 and W. J. V. Osterhout 1

1 From the Laboratories of The Rockefeller Institute for Medical Research

The rate of penetration of CO2 into living cells of Valonia has been studied at high and low pH values.

The time curve of penetration appears to be of the first order but with a "velocity constant" which falls off from the start.

The evidence indicates little penetration of ions. This is shown by (a) the similarity of velocity "constants" at high and low pH values, (b) the rate of penetration, which remains constant as long as the external concentration of undissociated CO2 remains constant no matter how much the concentration of ions varies.

 Accepted on September 19, 1929


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