Glycogen Metabolism & the Pentose Phosphate Pathway 9.3

Which sugar produced by the pentose phosphate pathway is used in the synthesis of RNA and DNA? A. ribose 5-phosphate B. ribulose 5-phosphate C. fructose 6-phosphate D. xylulose 5-phosphate

A. ribose 5-phosphate

What is the principal role of the pentose phosphate pathway? A. Production of energy by pentose phosphate synthesis B. Production of NADPH for use in reductive biosynthetic reactions C. Production of glycogen during fasting D. Alternative source of glycogen when glycolysis is not possible

B. Production of NADPH for use in reductive biosynthetic reactions

When NADPH is in high demand by the cell, which two gluconeogenic intermediates produced by the pentose phosphate pathway can be used to resynthesize glucose 6-phosphate? A. fructose 6-phosphate and fructose 1,6-bisphosphate B. dihydroxyacetone phosphate and fructose 6-phosphate C. glyceraldehyde 3-phosphate and fructose 6-phosphate D. glyceraldehyde 3-phosphate and fructose 1,6-bisphosphate

C. glyceraldehyde 3-phosphate and fructose 6-phosphate

Products of the metabolism of glucose-6-phosphate include or are incorporated into: A. glycogen B. acetyl-CoA C. DNA and RNA D. All the above

D. All the above