Question

Phosphorylation of adp to atp is endergonic, whereas the hydrolysis of atp to adp is exergonic. the two reactions are therefore said to be

Answer 1

Phosphorylation of ADP to ATP is an endergonic reaction, while the hydrolysis of ATP to ADP is an exergonic reaction. These two reactions are coupled, allowing for the constant regeneration of ATP.

Step-by-step explanation:

The process of phosphorylation of ADP to ATP is endergonic, meaning it requires an input of energy. On the other hand, the hydrolysis of ATP to ADP is exergonic, meaning it releases energy. These two reactions are said to be coupled, as the energy released during the hydrolysis of ATP is used to drive the endergonic phosphorylation of ADP to ATP. This coupling of reactions allows for the constant regeneration of ATP in the ATP cycle.

Answer 2

The phosphorylation of ADP to ATP and the hydrolysis of ADP to ADP are said to be COUPLED reactions. This is because phosphorylation of ADP to ATP is endergonic, whereas the hydrolysis of ATP to ADP is exergonic. In a coupled reaction, the energy that one process requires is supplied by another process.