Biology

Transport through Cell Membranes

Transport through Cell Membranes

Basic objective of this lecture is to present on “Transport through Cell Membranes”. Diffusion is the net movement of molecules (or ions) from a region of their high concentration to a region of their lower concentration. The molecules move down a concentration gradient. Molecules have kinetic energy, which makes them move about randomly. Here also present on what determines the rate of diffusion. The steepness of the concentration gradient: temperature; the surface area and the type of molecule or ion diffusing.