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

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.

answer: all : )

explanation:

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.