Question

the reaction adp + p --> atp is a(n) ______ reaction. endergonic spontaneous chemical hydrolysis exergonic

Explanation:

Endergonic reactions require energy input. The formation of ATP from ADP and inorganic phosphate (P) requires energy from cellular respiration or photosynthesis. It is not spontaneous (which releases energy without energy input), and it is not a hydrolysis reaction (which breaks down a molecule with water). While it is a chemical reaction, the most specific and correct term here is endergonic.

Answer:

A. endergonic