Biological cells with all of their surface structure and complex interior stripped away are essentially vesicles — membranes composed of lipid bilayers which form closed sacs. Vesicles are thought to be relevant as models of primitive protocells, and they could have provided the ideal environment for pre-biotic reactions to occur. In this paper, we investigate the stochastic dynamics of a set o...

The chemoton model of cells posits three sub-systems: metabolism, compartmentalization and information (Gánti, 2003). This paper describes a specific model for the evolution of a reproducing system with rudimentary versions of these three inter-dependent sub-systems. This is based on the initial emergence and reproduction of autocatalytic networks in hydrothermal micro-compartments containing i...

A self-reproducing cycle has the fundamental organization, A + X −→ 2A, and is autocatalytic, i.e. the products catalyze the formation of the products. The rate of increase of A is proportional to A, i.e. exponential. Asexual living entities often grow exponentially when resources are abundant, and decay exponentially when resources are scarce, according to autocatalytic kinetics. If two previo...

Buoyancy produced by autocatalytic reaction fronts can produce fluid flows that advect the front position, giving rise to interesting feedback between chemical and hydrodynamic effects. In this paper, we numerically investigate the evolution of autocatalytic iodate-arsenous acid reaction fronts initialized in spherical configurations. Deformation of these "autocatalytic balls" is driven by buoy...

Nonlinear effects in asymmetric synthesis and the occasionally observed reversal of the enantioselectivity of the employed catalyst are evaluated by a generalized kinetic approach. A non-autocatalytic and an autocatalytic reaction system are considered as two different prototype scenarios. It is predicted that during the course of enantioselectivity reversal in the non-autocatalytic system a gr...

During the homogeneous-heterogeneous autocatalytic chemical reaction in the dynamics of micropolar fluid, relaxation of heat transfer is inevitable; hence Cattaneo-Christov heat flux model is investigated in this report. In this study, radiative heat flux through an optically thick medium is treated as nonlinear due to the fact that thermal radiation at low heat energy is distinctly different f...