Which Reaction in Glycolysis is an Aldose to Ketose Isomerization

Question

Which reaction in glycolysis is an aldose to ketose isomerization?
A) enolase
B) phosphoglycerate mutase
C) phosphohexose isomerase
D) aldolase
E) glyceraldehyde-3-phosphate dehydrogenase

Accepted Answer

Phosphohexose isomerase catalyzes the conversion of glucose-6-phosphate (an aldose) to its isomer fructose-6-phosphate (a ketose).