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The present work continues studies of the mathematical model of a metabolicprocess of the Krebs cycle. We study the dependence of its cyclicity on thecell respiration intensity determined by the formation level of carbon dioxide.We constructed the phase-parametric characteristic of the consumption of asubstrate by a cell depending on the intensity of the metabolic process offormation of the final product of the oxidation. The scenarios of all possibleoscillatory modes of the system are constructed and studied. The bifurcationswith period doubling and with formation of chaotic modes are found. Theirattractors are constructed. The full spectra of indices and divergencies forthe obtained modes, the values of KS-entropies, horizons of predictability, andLyapunov dimensions of strange attractors are calculated. Some conclusionsabout the structural-functional connections of the cycle of tricarboxylic acidsand their influence on the stability of the metabolic process in a cell arepresented.

Nonlinear Self-organization Dynamics of a Metabolic Process of the Krebs Cycle