autocatalysis


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autocatalysis

 [aw″to-kah-tal´ĭ-sis]
an increase in the rate of a chemical reaction in which a product of the reaction itself hastens or intensifies the rate.

au·to·ca·tal·y·sis

(aw'tō-kă-tal'i-sis),
A reaction in which one or more of the products acts to catalyze the reaction; after beginning slowly, the rate of such a reaction rapidly increases. Compare: chain reaction.
Synonym(s): autoactivation

autocatalysis

/au·to·ca·tal·y·sis/ (-kah-tal´ĭ-sis) catalysis in which a product of the reaction hastens the catalysis.

au·to·ca·tal·y·sis

(aw'tō-kă-tal'i-sis)
A reaction in which one or more of the products formed acts to catalyze the reaction; beginning slowly, the rate of such a reaction rapidly increases.
Compare: chain reaction

autocatalysis

catalysis in which a product of the reaction hastens or intensifies the catalysis.
References in periodicals archive ?
Autocatalysis in human evolution refers to the interplay between bipedalism, brain elaboration, manual dexterity, dietary niche, language and material culture - each of these reinforcing the others through positive natural selection.
Deacon suggests that the interdependent combination of two morphodynamic processes, namely that of autocatalysis and the crystal like "self-assembly" such as produces viral shells or cell membranes, can produce a simple form of molecular teleodynamics.
Less controversial is his view that vertical semiosis is at the root of life's evolution, (26) although his assumption that all subsequent evolution likewise occurs through autocatalysis may be controversial.
Of course, metabolism in a biotic system proceeds on a qualitatively higher level, including such specific processes like cyclic chemical processes, autocatalysis, and feedback loops.
Autocatalysis as a source of synchronised rhythmical activity in social insects.
Autocatalysis is a particular form of positive feedback wherein the activity of an object or a process augments itself, usually via the mediation of some other object or process.
As a steady cycle of autocatalysis took hold, each template molecule attracted smaller molecular pieces from solution and fit them neatly into place.
Asymmetric Autocatalysis and Its Implications in the Origin of Chiral Homogeneity of Biomolecules (Kenso Soai and Tsuneomi Kawasaki).
According to our previous study, the composite with 5 wt% PLGA fibers degrades much faster than the PLLA-TMC neat copolymer and PLLA because the faster degradation of PLGA fibers speeds up the degradation of the matrix by autocatalysis [26], Meanwhile, composite with 5 wt% fibers exhibit nearly the same tensile strength and flexibility as PLLA, but with much higher modulus.
The proteinoid schema for the emergence of autocatalysis shown in Figure 1 is incomplete, because emergence requires a mechanism for information accrual: protein evolution had to be coupled with nucleic acid evolution.
2] represents the kinetic rate constant associated with the autocatalysis by the--OH groups generated by the epoxy amine reaction.