The step in glycolysis that utilises one ATP molecule is
Glucose - Glucose-6-phosphate
2-phosphoglycerate - phosphoenolpyruvate
Pyruvate - acetyl Co A
Fructose 1,6 diphosphate - Dihydroxyacetone phosphate
The first step in glycolysis is phosphorylation of glucose using ATP as the source of the phosphate, producing glucose-6-phosphate, a more reactive form of glucose. Hexokinase catalyses this reaction.