Answer:
A. Endergonic
Explanation:
Free energy refers to the component of the total energy of a system that is available to perform work at constant temperature and pressure. It depends on entropy, enthalpy and temperature. Free energy of a reaction is denoted by letter "G". Free-energy change (delta G) is the amount of free energy released or absorbed during a reaction at constant temperature and pressure.
When substrates absorb energy during the reaction, the delta G becomes positive. On the other hand, when the substrates release energy during reactions, the free energy change for the reaction is said to be negative. A reaction with positive free energy change is endergonic and non-spontaneous while the ones with negative free energy change are exergonic and spontaneous.
