For example, humans might consciously decide that they want to eat more or less, even in cases where the basic biological system that regulates energy balance is pushing them in the opposite direction.
Further, some authors have suggested the presence of functional associations between mood adjustment and the biological clock systems that regulate diurnal preference; in particular, it seems that evening preference might increase susceptibility to development of mood disorders.
The emergence of genomic approaches coupled to recombinant DNA technologies have identified the quality control systems that regulate proteostasis — biological pathways that modulate protein biogenesis, maturation, trafficking, and degradation.
The first one is the biological personality theory of Gray [ 17, 18], which posits two main brain systems that regulate behaviour in response to environmental stimuli.
A proposed new framework integrating the methodologies of control engineering and metabolic and hierarchical control analysis, improves the understanding of biological systems that are regulated both metabolically and by gene expression.
A parallel control strategy is developed for process applications by "reverse engineering" the functions of the baroreceptor reflex the biological control system that regulates arterial blood pressure.
There are instances in biological systems that a compound can up-regulate both an enzyme and its inhibitor.
A pathway may be considered to be a directional network of molecular interactions between components of a biological system that act together to regulate a cellular event or process.
