4. 下列有兩個反應式如下： Glucose+Pi → glucose-6-phosphate+H₂O  ΔG°=+13.8 kJ·mol⁻¹ ADP+Pi → ATP+H₂O                                          ΔG°=30.5 kJ·mol⁻¹ 試問 glucose+ATP→glucose-6-phosphate+ADP 此反應式的ΔG°為多少？ (A) 44.3 kJ·mol⁻¹ (B) 16.7 kJ·mol⁻¹ (C) -44.3 kJ·mol⁻¹ (D) -16.7 kJ·mol⁻¹