endergonic reaction

Endergonic reaction reactions which are not spontaneous at standard temperature, pressure, and concentrations.

An endergonic reaction is a chemical reaction that absorbs energy in the form of work.

Nevertheless, endergonic reactions are quite common in nature, especially in biochemistry and physiology.

Metabolism is the total of all catabolic, exergonic, anabolic, endergonic reactions.

The concentration of the products of the endergonic reaction thus always remains low, so the reaction can proceed.

Endergonic reactions can be pushed by coupling them to another reaction which is strongly exergonic, through a shared intermediate.

For Exergonic and Endergonic reactions, see the separate articles:

Endergonic reactions are not spontaneous.

Energy is required for glycogenesis, and the blood does not deliver energy, just the ingredients for endergonic reactions.

Endergonic reactions can be achieved if they are either pulled or pushed by an exergonic (stability increasing, negative change in Free Energy) process.

Endergonic reactions require energy and include anabolic reactions and the contraction of muscle.

They also serve for energy coupling with endergonic reactions, notably the formation of (phospho)anhydride compounds.

Reagents can be pulled through an endergonic reaction, if the reaction products are cleared rapidly by a subsequent exergonic reaction.

In endergonic reactions and exergonic reactions it is the sign of the Gibbs free energy that determines the equilibrium point, and not enthalpy.

Thus, the postulate predicts an early transition state for an exergonic reaction and a late transition state for an endergonic reaction.

Note that the reaction requires a stoichiometric amount of base as the removal of the doubly α-proton thermodynamically drives the otherwise endergonic reaction.

Examples of endergonic reactions in cells include protein synthesis, and the Na/K pump which drives nerve conduction and muscle contraction.

The behavior of linked exergonic and endergonic reaction networks is the very stuV of intermediate metabolism and energy's biochemical transduction, studied for years by biochemists.

Indeed, the coevolution of autonomous agents naturally leads to a linked web of exergonic and endergonic reactions within and between the autonomous agents.

A chemical reaction network with a work cycle will have to link spontaneous, exergonic and nonspontaneous, endergonic reactions into the chemical analogue of a work cycle.

Precisely because an autonomous agent links exergonic and endergonic reactions in work cycles, the breakdown of high-energy sources here can be used to build up structure and organization there.

I initially thought that the cold tube/canister showed a great example of an endergonic reaction, but I was thinking of endoTHERMIC.

The vast and richly coupled network of coupled exergonic and endergonic reactions in the global ecosystem is proof positive of such propagating construction in the physical universe.

Think of the teeming busyness of a coevolving mixed microbial community of long ago, successfully linking exergonic and endergonic reactions fired by the sun and other high-energy sources.

A reaction is said to be exergonic if the final state is lower on the energy scale than the initial state; in the case of endergonic reactions the situation is the reverse.