Randomization of carbon atoms in the glucose molecule and changes of specific radioactivity of14CO2 liberated by the callus tissue ofDaucus carota L. from glucose-6- and -1-14C

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Abstract
On incubation of the callus tissue ofDaucus carota L. in solutions of glucose-6-14C and -1-14C the distribution of radioactivity in the molecule of endogenous glucose will change and the ratio of activities of liberated14CO2 (C6/C1) will rise The limits of possible changes of specific activity of14CO2 and of the C6/C1 ratio were calculated with respect to the observed randomization and it was shown that the mutual exchange of carbon atoms in the molecules is not the decisive cause of the rise of the ratio.