The net energy yield during the conversion of glucose to pyruvate in glycolysis is 2 ATP molecules per glucose molecule. Glycolysis is a series of 10 enzyme-catalyzed reactions that occur in the cytoplasm of the cell. The process can be divided into two main phases: the energy investment phase and the energy generation phase.Here are the detailed steps involved in glycolysis:Energy Investment Phase:1. Hexokinase: Glucose is phosphorylated by hexokinase, using one ATP molecule to form glucose-6-phosphate. This step consumes one ATP molecule.2. Phosphoglucose isomerase: Glucose-6-phosphate is converted to fructose-6-phosphate.3. Phosphofructokinase: Fructose-6-phosphate is phosphorylated by phosphofructokinase, using another ATP molecule to form fructose-1,6-bisphosphate. This step consumes one more ATP molecule.4. Aldolase: Fructose-1,6-bisphosphate is cleaved into two three-carbon molecules, glyceraldehyde-3-phosphate G3P and dihydroxyacetone phosphate DHAP .5. Triose phosphate isomerase: DHAP is converted to G3P, resulting in two G3P molecules.Energy Generation Phase:6. Glyceraldehyde-3-phosphate dehydrogenase: Each G3P molecule is oxidized and phosphorylated to form 1,3-bisphosphoglycerate 1,3-BPG . This step generates two NADH molecules one per G3P .7. Phosphoglycerate kinase: Each 1,3-BPG molecule transfers a phosphate group to ADP, forming ATP and 3-phosphoglycerate. This step generates two ATP molecules one per 1,3-BPG .8. Phosphoglycerate mutase: Each 3-phosphoglycerate molecule is converted to 2-phosphoglycerate.9. Enolase: Each 2-phosphoglycerate molecule is dehydrated to form phosphoenolpyruvate PEP .10. Pyruvate kinase: Each PEP molecule transfers a phosphate group to ADP, forming ATP and pyruvate. This step generates two more ATP molecules one per PEP .In summary, the energy investment phase consumes 2 ATP molecules, while the energy generation phase produces 4 ATP molecules. Therefore, the net energy yield of glycolysis is 2 ATP molecules per glucose molecule 4 produced - 2 consumed . Additionally, 2 NADH molecules are generated during the process, which can be further used in the electron transport chain to produce more ATP.