The Fundamental Nature of Diffusion Diffusion is defined fundamentally as the net passive movement of particles, whether atoms or molecules, from a region where they are present in a higher concentration to a region of lower concentration. This fundamental process is driven solely by the inherent, random thermal motion of the individual constituents and represents […]
Introduction to Passive Transport Passive transport is a fundamental physiological process describing the motion of compounds across a biological membrane without the direct expenditure of metabolic energy (Adenosine Triphosphate or ATP) by the cell. This movement is dictated entirely by the inherent thermodynamic drive toward equilibrium, specifically driven by the substance’s concentration gradient or, in […]