Endergonic reaction
Endergonic Reaction
An Endergonic Reaction (pronunciation: /ɛndərˈɡɒnɪk rɪˈækʃən/) is a type of Chemical Reaction that absorbs energy from its surroundings. The term 'Endergonic' is derived from the Greek words 'endon' meaning 'inside' and 'ergon' meaning 'work'.
Overview
In an Endergonic Reaction, the energy of the products is greater than the energy of the reactants, resulting in a net absorption of energy. This is in contrast to an Exergonic Reaction, where energy is released. Endergonic Reactions are not spontaneous and require an input of energy to proceed.
Characteristics
Endergonic Reactions are characterized by a positive change in Gibbs Free Energy (ΔG), indicating that the reaction is not spontaneous. These reactions are common in biological systems, where they are often coupled with Exergonic Reactions to drive important processes such as Cellular Respiration and Photosynthesis.
Examples
A common example of an Endergonic Reaction is the process of Photosynthesis, where light energy is absorbed and used to convert carbon dioxide and water into glucose and oxygen. Another example is the synthesis of ATP in cells, which is a key energy storage molecule in living organisms.
See Also
External links
- Medical encyclopedia article on Endergonic reaction
- Wikipedia's article - Endergonic reaction
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