exergonic


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exergonic

[‚ek·sər′gän·ik]
(biochemistry)
Of or pertaining to a biochemical reaction in which the end products possess less free energy than the starting materials; usually associated with catabolism.
References in periodicals archive ?
Na[BH.sub.4] (1.054 g) was added slowly, and an exergonic reaction was observed at each addition.
Even back in the Hilton's well-appointed marble bathroom, things could be reassuringly exergonic. Bathing an obdurate, slippery twenty-three-pound mermaid in a porcelain sink--to my knowledge, TWITCH has never even rated this wet little parcel of calvary.
H2 is delivered using the donors: lactate; ethanol (EtOH); butyrate; or propionate substrates; whose fermentation to H2 is exergonic under H2 partial pressures (ceilings) of less than: 1; 0.1; 10(exp -3.5), and 10(exp -4.4) atm, respectively.
Table III The electrochemical potential (in V) of each ion across the plasma membrane and vacuolar membrane of a characean internodal cell and the plasma membrane of a squid nerve Characean internodal cell Squid nerve Plasma membrane Vacuolar membrane Plasma membrane [Cl.sup.-] -0.283 0.041 -0.049 [Na.sup.+] -0.080 -0.059 -0.150 [K.sup.+] 0 -0.008 0 [Ca.sup.2+] -0.239 -0.131 -0.193 If we assume that an ion is moving from a P-space (initial state) to an E-space (final state), we can tell whether the movement is spontaneous (passive, or exergonic) in this direction by multiplying the electrochemical potential with the product of the valence of the ion times the Faraday (zF).
It is obvious from the values in Table 3 that the formation of all the juglone chelates in gas phase is exothermic and exergonic, meaning that these reactions are thermodynamically feasible.