Semipermeability

Semipermeability is a property of some membranes that allows certain substances to pass through while blocking others. Think of it like a filter that permits water molecules to move freely, but prevents larger molecules or unwanted particles from crossing. This selective permeability helps regulate what enters and exits cells or other structures, maintaining proper balance and function. Examples include cell membranes controlling nutrient intake and waste removal, essential for healthy cellular activity.