Levels of glucose-6-phosphate (G6P)are affected by which of the following?
(I)glycogen breakdown
(II)activity of the pentose phosphate pathway
(III)galactose preparation for entry into glycolysis
A)I,II
B)I,II,III
C)III
D)II,
E)I,III

Question

Quizplus · Accepted Answer

G6P is involved in all three processes mentioned: 
(I) it is a precursor for glycogen synthesis and is produced during glycogen breakdown, 
(II) it is the initial substrate for the pentose phosphate pathway, and 
(III) it is a key intermediate in the conversion of galactose to glucose-1-phosphate for entry into glycolysis. Therefore, the levels of G6P are affected by all three processes, making choice B the best answer.

Levels of Glucose-6-Phosphate (G6P)are Affected by Which of the Following