Osmoregulation and Osmotic Balance

Osmoregulation balances concentrations of solutes and water across semi-permeable membranes, maintaining homeostasis.

Ions cannot diffuse passively through membranes; instead, their concentrations are regulated by facilitated diffusion and active transport.

Solution concentration is expressed by a solution's molality, while electrolyte concentration is expressed in terms of milliequivalents per liter.

Aquatic organisms with various salt tolerances adapt to their environments through osmoregulation and osmoconformation.