You dip your teabag into a cup of boiling water and watch the clear steaming liquid slowly change into an inviting rich red. The laws by which the particles of tea spread from the source of high ...

This study presents a heterostructured organohydrogel that regulates dual molecular transport, enhancing scalability and ...

Active transport is a process that moves molecules against a concentration gradient. The process requires energy. For plants to take up mineral ions, ions are moved by active transport into root hairs ...

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 ...

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 ...

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 ...

Transport proteins are proteins that help in transporting of substances across biological membranes. Ions such as sodium and potassium ae the substances transported by transport proteins .They ...

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 ...