Question: Explain this in an easy way for me to understand: In cells, endergonic reactions are often made spontaneous by being coupled with which process? Correct Answer: (d) The hydrolysis of a high-energy bond in ATP Explanation: Endergonic reactions, which require energy input, can become spontaneous when coupled with exergonic reactions like the hydrolysis of ATP. This coupling allows the energy released from ATP hydrolysis to drive the endergonic reaction. Need Assignment Help?