試題詳解

38. Which of the following reactions is catalyzed by a transketolase in the pentose phosphate pathway?
I. fructose-6-P + glyceraldehyde-3-P → xylulose-5-P + erythrose-4-P
II. erythrose-4-P + fructose-6-P → sedoheptulose-7-P + glyceraldehyde-3-P
III. sedoheptulose-7-P + glyceraldehyde-3-P → ribose-5-P + xylulose-5-P
(A) I only.
(B) II and III.
(C) II only.
(D) I and III.
(E) I and II.