the extent of isotope incorporation into c5 of ribonucleic acid ribose when cells were grown in the presence of specifically labeled d-glucose and d-fructose clearly indicated that ( i ) the hexose monophosphate oxidative pathway is the predominant metabolic route for carbohydrate assimilation and ( ii ) extensive randomization of label between c1 and c6 of d-fructose occurred prior to its conversion into pentose .
C0035549
ribose
C0030894
pentose