Lone Rock Beach and Horseshoe Bend in Page, Arizona. After we left Holbrook, we headed over towards Flagstaff, Arizona to stock up on some supplies and do some housekeeping.
Glycolysis involves nine distinct reactions that convert glucose into pyruvate. In this section, we will cover the first four of these reactions, which convert glucose into glyceraldehyde-3-phosphate.
1 Glucose is converted into glucose-6-phosphate by the action of glucokinase or hexokinase.2  Glucose-6-phosphate is converted into glucose-1-phosphate by the action of phosphoglucomutase, passing through the obligatory intermediate glucose-1,6-bisphosphate. Glucose is converted into glucose-6-phosphate by the action of glucokinase or hexokinase.