AP BIOLOGY

Detailed explanation-1: -The formation of ATP by condensation between ADP and inorganic phosphate is a highly endothermic reaction.

Detailed explanation-2: -Reactions that produce energy, like ATP hydrolysis, are referred to as exothermic reactions (or sometimes exergonic, meaning roughly the same thing).

Detailed explanation-3: -Through metabolic processes, ATP becomes hydrolyzed into ADP, or further to AMP, and free inorganic phosphate groups. The process of ATP hydrolysis to ADP is energetically favorable, yielding Gibbs-free energy of-7.3 cal/mol.

Detailed explanation-4: -ATP breakdown into ADP and Pi is called hydrolysis because it consumes a water molecule (hydro-, meaning “water”, and lysis, meaning “separation”).