Adenosine Triphosphate ( ATP ) is the intermediate molecule that drives the exergonic transfer of energy to switch to endergonic anabolic reactions used in muscle contraction.
22.
If we couple reactions, then an otherwise endergonic chemical reaction ( one with positive ? " G " ) can be made to happen.
23.
At high temperatures, the forward reaction is therefore endergonic, favoring the ( exergonic ) reverse reaction toward CO, even though the forward reaction is still exothermic.
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Endergonic reactions can be achieved if they are either " pulled " or " pushed " by an exergonic ( stability increasing, negative change in free energy ) process.
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This is an example of phosphorylation coupled to oxidation, and the overall reaction is somewhat endergonic ( ?G?= + 6.3 kJ / mol ( + 1.5 ) ).
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If it's not endergonic, then it will condense until it reaches equilibrium . [ From how I see it . ] talk ) 04 : 56, 4 May 2009 ( UTC)
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You could also envision situations where a process is " exothermic ", but " endergonic ", that is work is done ON the system, but heat is release BY the system.
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So at some point it starts being endergonic too . ( Presumably that sets up the equilibrium point, if all the ammonium nitrate isn't dissolved . ) talk ) 04 : 56, 4 May 2009 ( UTC)
29.
In metabolism, an endergonic process is anabolic, meaning that energy is stored; in many such anabolic processes energy is supplied by coupling the reaction to adenosine triphosphate ( ATP ) and consequently resulting in a high energy, negatively charged organic phosphate and positive adenosine diphosphate.
30.
Where the metabolism of sugars and the metabolism of alcohol merges is when they are converted into an acetyl group and bound as a thioester with coenzyme A to form acetyl-CoA . The first step of ethanol metabolism involves its conversion into acetaldehyde, and this * costs * energy ( it's endergonic ).
