New fundamental physics research provides insights on the process of diffusion in complex systems such as living organisms. This new theoretical framework has broad implications for active surfaces, ...

Part of Biology (Single Science) Living together - Food and ecosystems Active transport is a process that moves molecules against a concentration gradient. The process requires energy. For plants to ...

Microvascular Tissue Engineering: Tissue engineering has the potential to revolutionize healthcare. A significant challenge in tissue engineering is to overcome substrate mass transfer limitations, ...

Modifications to existing theories have enabled researchers to better understand and model the dynamics of systems which don't obey conventional laws of diffusion. In normal circumstances, particles ...

Animals, including humans, need to absorb all glucose molecules from their food. This is taken from the gut wall, inside the small intestine, into the blood. There is more glucose (a higher ...

Journal of Experimental Botany, Vol. 15, No. 45 (October 1964), pp. 422-427 (6 pages) The electrical potential difference between the exuding sap of detopped castor oil plants and the external 1 mM ...

Glucose serves as a major source of energy for metabolic processes in mammalian cells. Since polar molecules cannot be transported across the plasma membrane, carrier proteins called glucose ...