Control of the entry of glucose or fructose into the oxidative portions of the pentose phosphate pathway is mostly dependent on a cell's need for NADPH, rather than on the cell's need for pentoses.

Question

Quizplus · Accepted Answer

The oxidative phase of the pentose phosphate pathway is primarily regulated by the cell's need for NADPH, which is used in biosynthesis, antioxidant defense, and other cellular processes. The demand for pentoses (5-carbon sugars) plays a secondary role in the regulation of this pathway.

Control of the Entry of Glucose or Fructose into the Oxidative