Final answer:
The conversion of glucose-6-phosphate into fructose-6-phosphate during glycolysis is an example of an isomerization reaction, facilitated by the enzyme phosphogluco-isomerase.
Step-by-step explanation:
The reaction of glucose-6-phosphate (G6P) to form fructose-6-phosphate (F6P) in glycolysis is an isomerization process. Isomerization is a reaction where a molecule is converted into one of its isomers, meaning a different arrangement of atoms but with the same atomic composition.
In this reaction, the enzyme phosphogluco-isomerase converts G6P into one of its isomers, F6P. This is an important step in glycolysis because it prepares the six-carbon sugar for the eventual split into two three-carbon molecules later in the pathway.