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On the basis of a mathematical model, we continue the study of the metabolicKrebs cycle (or the tricarboxilic acid cycle). For the first time, we considerits consistency and stability, which depend on the dissipation of atransmembrane potential formed by the respiratory chain in the plasmaticmembrane of a cell. The phase-parametric characteristic of the dynamics of theATP level depending on a given parameter is constructed. The scenario offormation of multiple autoperiodic and chaotic modes is presented. Poincar\'{e}sections and mappings are constructed. The stability of modes and thefractality of the obtained bifurcations are studied. The full spectra ofLyapunov indices, divergences, KS-entropies, horizons of predictability, andLyapunov dimensionalities of strange attractors are calculated. Someconclusions about the structural-functional connections determining thedependence of the cell respiration cyclicity on the synchronization of thefunctioning of the tricarboxilic acid cycle and the electron transport chainare presented.

Lyapunov Indices and the Poincar\'e Mapping in a Study of the Stability of the Krebs Cycle